scons: Enable mesa state tracker in all platforms by default.

But only actually build it on some. This results in a better default
scons experience.
diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index 6b99dac..04b771a 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -4,307 +4,309 @@
 
 Import('*')
 
-env = env.Clone()
+if env['platform'] != 'winddk':
 
-# Includes
-env.Append(CPPPATH = [
-	'#/src/mesa',
-	'#/src/mesa/main',
-])
-
-if gcc:
-	env.Append(CFLAGS = [
-		'-std=c99',
+	env = env.Clone()
+	
+	# Includes
+	env.Append(CPPPATH = [
+		'#/src/mesa',
+		'#/src/mesa/main',
 	])
-
-# x86 assembly
-if x86 and gcc:
-	env.Append(CPPDEFINES = [
-		'USE_X86_ASM', 
-		'USE_MMX_ASM',
-		'USE_3DNOW_ASM',
-		'USE_SSE_ASM',
-	])
-
-
-#######################################################################
-# Core sources
-
-MAIN_SOURCES = [
-	'main/api_arrayelt.c',
-	'main/api_loopback.c',
-	'main/api_noop.c',
-	'main/api_validate.c',
-	'main/accum.c',
-	'main/attrib.c',
-	'main/arrayobj.c',
-	'main/blend.c',
-	'main/bufferobj.c',
-	'main/buffers.c',
-	'main/clip.c',
-	'main/colortab.c',
-	'main/context.c',
-	'main/convolve.c',
-	'main/debug.c',
-	'main/depth.c',
-	'main/depthstencil.c',
-	'main/dlist.c',
-	'main/drawpix.c',
-	'main/enable.c',
-	'main/enums.c',
-	'main/eval.c',
-	'main/execmem.c',
-	'main/extensions.c',
-	'main/fbobject.c',
-	'main/feedback.c',
-	'main/ffvertex_prog.c',
-	'main/fog.c',
-	'main/framebuffer.c',
-	'main/get.c',
-	'main/getstring.c',
-	'main/hash.c',
-	'main/hint.c',
-	'main/histogram.c',
-	'main/image.c',
-	'main/imports.c',
-	'main/light.c',
-	'main/lines.c',
-	'main/matrix.c',
-	'main/mipmap.c',
-	'main/mm.c',
-	'main/pixel.c',
-	'main/points.c',
-	'main/polygon.c',
-	'main/queryobj.c',
-	'main/rastpos.c',
-	'main/rbadaptors.c',
-	'main/renderbuffer.c',
-	'main/shaders.c',
-	'main/state.c',
-	'main/stencil.c',
-	'main/texcompress.c',
-	'main/texcompress_s3tc.c',
-	'main/texcompress_fxt1.c',
-	'main/texenvprogram.c',
-	'main/texformat.c',
-	'main/teximage.c',
-	'main/texobj.c',
-	'main/texrender.c',
-	'main/texstate.c',
-	'main/texstore.c',
-	'main/varray.c',
-	'main/vtxfmt.c',
-]
-
-GLAPI_SOURCES = [
-	'main/dispatch.c',
-	'glapi/glapi.c',
-	'glapi/glthread.c',
-]
-
-MATH_SOURCES = [
-	'math/m_debug_clip.c',
-	'math/m_debug_norm.c',
-	'math/m_debug_xform.c',
-	'math/m_eval.c',
-	'math/m_matrix.c',
-	'math/m_translate.c',
-	'math/m_vector.c',
-	'math/m_xform.c',
-]
-
-VBO_SOURCES = [
-	'vbo/vbo_context.c',
-	'vbo/vbo_exec.c',
-	'vbo/vbo_exec_api.c',
-	'vbo/vbo_exec_array.c',
-	'vbo/vbo_exec_draw.c',
-	'vbo/vbo_exec_eval.c',
-	'vbo/vbo_rebase.c',
-	'vbo/vbo_split.c',
-	'vbo/vbo_split_copy.c',
-	'vbo/vbo_split_inplace.c',
-	'vbo/vbo_save.c',
-	'vbo/vbo_save_api.c',
-	'vbo/vbo_save_draw.c',
-	'vbo/vbo_save_loopback.c',
-]
-
-VF_SOURCES = [
-	'vf/vf.c',
-	'vf/vf_generic.c',
-	'vf/vf_sse.c',
-]
-
-STATETRACKER_SOURCES = [
-	'state_tracker/st_atom.c',
-	'state_tracker/st_atom_blend.c',
-	'state_tracker/st_atom_clip.c',
-	'state_tracker/st_atom_constbuf.c',
-	'state_tracker/st_atom_depth.c',
-	'state_tracker/st_atom_framebuffer.c',
-	'state_tracker/st_atom_pixeltransfer.c',
-	'state_tracker/st_atom_sampler.c',
-	'state_tracker/st_atom_scissor.c',
-	'state_tracker/st_atom_shader.c',
-	'state_tracker/st_atom_rasterizer.c',
-	'state_tracker/st_atom_stipple.c',
-	'state_tracker/st_atom_texture.c',
-	'state_tracker/st_atom_viewport.c',
-	'state_tracker/st_cb_accum.c',
-	'state_tracker/st_cb_bitmap.c',
-	'state_tracker/st_cb_blit.c',
-	'state_tracker/st_cb_bufferobjects.c',
-	'state_tracker/st_cb_clear.c',
-	'state_tracker/st_cb_flush.c',
-	'state_tracker/st_cb_drawpixels.c',
-	'state_tracker/st_cb_fbo.c',
-	'state_tracker/st_cb_feedback.c',
-	'state_tracker/st_cb_program.c',
-	'state_tracker/st_cb_queryobj.c',
-	'state_tracker/st_cb_rasterpos.c',
-	'state_tracker/st_cb_readpixels.c',
-	'state_tracker/st_cb_strings.c',
-	'state_tracker/st_cb_texture.c',
-	'state_tracker/st_context.c',
-	'state_tracker/st_debug.c',
-	'state_tracker/st_draw.c',
-	'state_tracker/st_extensions.c',
-	'state_tracker/st_format.c',
-	'state_tracker/st_framebuffer.c',
-	'state_tracker/st_gen_mipmap.c',
-	'state_tracker/st_mesa_to_tgsi.c',
-	'state_tracker/st_program.c',
-	'state_tracker/st_texture.c',
-]
-
-SHADER_SOURCES = [
-	'shader/arbprogparse.c',
-	'shader/arbprogram.c',
-	'shader/atifragshader.c',
-	'shader/grammar/grammar_mesa.c',
-	'shader/nvfragparse.c',
-	'shader/nvprogram.c',
-	'shader/nvvertparse.c',
-	'shader/program.c',
-	'shader/prog_cache.c',
-	'shader/prog_debug.c',
-	'shader/prog_execute.c',
-	'shader/prog_instruction.c',
-	'shader/prog_parameter.c',
-	'shader/prog_print.c',
-	'shader/prog_statevars.c',
-	'shader/prog_uniform.c',
-	'shader/programopt.c',
-	'shader/shader_api.c',
-]
-
-SLANG_SOURCES = [
-	'shader/slang/slang_builtin.c',
-	'shader/slang/slang_codegen.c',
-	'shader/slang/slang_compile.c',
-	'shader/slang/slang_compile_function.c',
-	'shader/slang/slang_compile_operation.c',
-	'shader/slang/slang_compile_struct.c',
-	'shader/slang/slang_compile_variable.c',
-	'shader/slang/slang_emit.c',
-	'shader/slang/slang_ir.c',
-	'shader/slang/slang_label.c',
-	'shader/slang/slang_library_noise.c',
-	'shader/slang/slang_link.c',
-	'shader/slang/slang_log.c',
-	'shader/slang/slang_mem.c',
-	'shader/slang/slang_preprocess.c',
-	'shader/slang/slang_print.c',
-	'shader/slang/slang_simplify.c',
-	'shader/slang/slang_storage.c',
-	'shader/slang/slang_typeinfo.c',
-	'shader/slang/slang_vartable.c',
-	'shader/slang/slang_utility.c',
-]
-
-
-#######################################################################
-# Assembly sources
-
-ASM_C_SOURCES = [
-	'x86/common_x86.c',
-	'x86/x86.c',
-	'x86/3dnow.c',
-	'x86/sse.c',
-	'sparc/sparc.c',
-	'ppc/common_ppc.c',
-	'x86-64/x86-64.c',
-]
-
-X86_SOURCES = [
-	'x86/common_x86_asm.S',
-	'x86/x86_xform2.S',
-	'x86/x86_xform3.S',
-	'x86/x86_xform4.S',
-	'x86/x86_cliptest.S',
-	'x86/mmx_blend.S',
-	'x86/3dnow_xform1.S',
-	'x86/3dnow_xform2.S',
-	'x86/3dnow_xform3.S',
-	'x86/3dnow_xform4.S',
-	'x86/3dnow_normal.S',
-	'x86/sse_xform1.S',
-	'x86/sse_xform2.S',
-	'x86/sse_xform3.S',
-	'x86/sse_xform4.S',
-	'x86/sse_normal.S',
-	'x86/read_rgba_span_x86.S',
-]
-
-X86_API = [
-	'x86/glapi_x86.S',
-]
-
-X86_64_SOURCES = [
-	'x86-64/xform4.S',
-]
-
-X86_64_API = [
-	'x86-64/glapi_x86-64.S',
-]
-
-SPARC_SOURCES = [
-	'sparc/clip.S',
-	'sparc/norm.S',
-	'sparc/xform.S',
-]
-
-SPARC_API = [
-	'sparc/glapi_sparc.S',
-]
-
-if x86 and gcc:
-	ASM_SOURCES = ASM_C_SOURCES + X86_SOURCES 
-	API_SOURCES = X86_API
-else:
-	ASM_SOURCES = []
-	API_SOURCES = []
-
-SOLO_SOURCES = \
-	MAIN_SOURCES + \
-	MATH_SOURCES + \
-	VBO_SOURCES + \
-	VF_SOURCES + \
-	STATETRACKER_SOURCES + \
-	SHADER_SOURCES + \
-	ASM_SOURCES + \
-	SLANG_SOURCES
-
-mesa = env.ConvenienceLibrary(
-	target = 'mesa',
-	source = SOLO_SOURCES,
-)
-Export('mesa')
-
-if not dri:
-	glapi = env.ConvenienceLibrary(
-		target = 'glapi',
-		source = GLAPI_SOURCES + API_SOURCES,
+	
+	if gcc:
+		env.Append(CFLAGS = [
+			'-std=c99',
+		])
+	
+	# x86 assembly
+	if x86 and gcc:
+		env.Append(CPPDEFINES = [
+			'USE_X86_ASM', 
+			'USE_MMX_ASM',
+			'USE_3DNOW_ASM',
+			'USE_SSE_ASM',
+		])
+	
+	
+	#######################################################################
+	# Core sources
+	
+	MAIN_SOURCES = [
+		'main/api_arrayelt.c',
+		'main/api_loopback.c',
+		'main/api_noop.c',
+		'main/api_validate.c',
+		'main/accum.c',
+		'main/attrib.c',
+		'main/arrayobj.c',
+		'main/blend.c',
+		'main/bufferobj.c',
+		'main/buffers.c',
+		'main/clip.c',
+		'main/colortab.c',
+		'main/context.c',
+		'main/convolve.c',
+		'main/debug.c',
+		'main/depth.c',
+		'main/depthstencil.c',
+		'main/dlist.c',
+		'main/drawpix.c',
+		'main/enable.c',
+		'main/enums.c',
+		'main/eval.c',
+		'main/execmem.c',
+		'main/extensions.c',
+		'main/fbobject.c',
+		'main/feedback.c',
+		'main/ffvertex_prog.c',
+		'main/fog.c',
+		'main/framebuffer.c',
+		'main/get.c',
+		'main/getstring.c',
+		'main/hash.c',
+		'main/hint.c',
+		'main/histogram.c',
+		'main/image.c',
+		'main/imports.c',
+		'main/light.c',
+		'main/lines.c',
+		'main/matrix.c',
+		'main/mipmap.c',
+		'main/mm.c',
+		'main/pixel.c',
+		'main/points.c',
+		'main/polygon.c',
+		'main/queryobj.c',
+		'main/rastpos.c',
+		'main/rbadaptors.c',
+		'main/renderbuffer.c',
+		'main/shaders.c',
+		'main/state.c',
+		'main/stencil.c',
+		'main/texcompress.c',
+		'main/texcompress_s3tc.c',
+		'main/texcompress_fxt1.c',
+		'main/texenvprogram.c',
+		'main/texformat.c',
+		'main/teximage.c',
+		'main/texobj.c',
+		'main/texrender.c',
+		'main/texstate.c',
+		'main/texstore.c',
+		'main/varray.c',
+		'main/vtxfmt.c',
+	]
+	
+	GLAPI_SOURCES = [
+		'main/dispatch.c',
+		'glapi/glapi.c',
+		'glapi/glthread.c',
+	]
+	
+	MATH_SOURCES = [
+		'math/m_debug_clip.c',
+		'math/m_debug_norm.c',
+		'math/m_debug_xform.c',
+		'math/m_eval.c',
+		'math/m_matrix.c',
+		'math/m_translate.c',
+		'math/m_vector.c',
+		'math/m_xform.c',
+	]
+	
+	VBO_SOURCES = [
+		'vbo/vbo_context.c',
+		'vbo/vbo_exec.c',
+		'vbo/vbo_exec_api.c',
+		'vbo/vbo_exec_array.c',
+		'vbo/vbo_exec_draw.c',
+		'vbo/vbo_exec_eval.c',
+		'vbo/vbo_rebase.c',
+		'vbo/vbo_split.c',
+		'vbo/vbo_split_copy.c',
+		'vbo/vbo_split_inplace.c',
+		'vbo/vbo_save.c',
+		'vbo/vbo_save_api.c',
+		'vbo/vbo_save_draw.c',
+		'vbo/vbo_save_loopback.c',
+	]
+	
+	VF_SOURCES = [
+		'vf/vf.c',
+		'vf/vf_generic.c',
+		'vf/vf_sse.c',
+	]
+	
+	STATETRACKER_SOURCES = [
+		'state_tracker/st_atom.c',
+		'state_tracker/st_atom_blend.c',
+		'state_tracker/st_atom_clip.c',
+		'state_tracker/st_atom_constbuf.c',
+		'state_tracker/st_atom_depth.c',
+		'state_tracker/st_atom_framebuffer.c',
+		'state_tracker/st_atom_pixeltransfer.c',
+		'state_tracker/st_atom_sampler.c',
+		'state_tracker/st_atom_scissor.c',
+		'state_tracker/st_atom_shader.c',
+		'state_tracker/st_atom_rasterizer.c',
+		'state_tracker/st_atom_stipple.c',
+		'state_tracker/st_atom_texture.c',
+		'state_tracker/st_atom_viewport.c',
+		'state_tracker/st_cb_accum.c',
+		'state_tracker/st_cb_bitmap.c',
+		'state_tracker/st_cb_blit.c',
+		'state_tracker/st_cb_bufferobjects.c',
+		'state_tracker/st_cb_clear.c',
+		'state_tracker/st_cb_flush.c',
+		'state_tracker/st_cb_drawpixels.c',
+		'state_tracker/st_cb_fbo.c',
+		'state_tracker/st_cb_feedback.c',
+		'state_tracker/st_cb_program.c',
+		'state_tracker/st_cb_queryobj.c',
+		'state_tracker/st_cb_rasterpos.c',
+		'state_tracker/st_cb_readpixels.c',
+		'state_tracker/st_cb_strings.c',
+		'state_tracker/st_cb_texture.c',
+		'state_tracker/st_context.c',
+		'state_tracker/st_debug.c',
+		'state_tracker/st_draw.c',
+		'state_tracker/st_extensions.c',
+		'state_tracker/st_format.c',
+		'state_tracker/st_framebuffer.c',
+		'state_tracker/st_gen_mipmap.c',
+		'state_tracker/st_mesa_to_tgsi.c',
+		'state_tracker/st_program.c',
+		'state_tracker/st_texture.c',
+	]
+	
+	SHADER_SOURCES = [
+		'shader/arbprogparse.c',
+		'shader/arbprogram.c',
+		'shader/atifragshader.c',
+		'shader/grammar/grammar_mesa.c',
+		'shader/nvfragparse.c',
+		'shader/nvprogram.c',
+		'shader/nvvertparse.c',
+		'shader/program.c',
+		'shader/prog_cache.c',
+		'shader/prog_debug.c',
+		'shader/prog_execute.c',
+		'shader/prog_instruction.c',
+		'shader/prog_parameter.c',
+		'shader/prog_print.c',
+		'shader/prog_statevars.c',
+		'shader/prog_uniform.c',
+		'shader/programopt.c',
+		'shader/shader_api.c',
+	]
+	
+	SLANG_SOURCES = [
+		'shader/slang/slang_builtin.c',
+		'shader/slang/slang_codegen.c',
+		'shader/slang/slang_compile.c',
+		'shader/slang/slang_compile_function.c',
+		'shader/slang/slang_compile_operation.c',
+		'shader/slang/slang_compile_struct.c',
+		'shader/slang/slang_compile_variable.c',
+		'shader/slang/slang_emit.c',
+		'shader/slang/slang_ir.c',
+		'shader/slang/slang_label.c',
+		'shader/slang/slang_library_noise.c',
+		'shader/slang/slang_link.c',
+		'shader/slang/slang_log.c',
+		'shader/slang/slang_mem.c',
+		'shader/slang/slang_preprocess.c',
+		'shader/slang/slang_print.c',
+		'shader/slang/slang_simplify.c',
+		'shader/slang/slang_storage.c',
+		'shader/slang/slang_typeinfo.c',
+		'shader/slang/slang_vartable.c',
+		'shader/slang/slang_utility.c',
+	]
+	
+	
+	#######################################################################
+	# Assembly sources
+	
+	ASM_C_SOURCES = [
+		'x86/common_x86.c',
+		'x86/x86.c',
+		'x86/3dnow.c',
+		'x86/sse.c',
+		'sparc/sparc.c',
+		'ppc/common_ppc.c',
+		'x86-64/x86-64.c',
+	]
+	
+	X86_SOURCES = [
+		'x86/common_x86_asm.S',
+		'x86/x86_xform2.S',
+		'x86/x86_xform3.S',
+		'x86/x86_xform4.S',
+		'x86/x86_cliptest.S',
+		'x86/mmx_blend.S',
+		'x86/3dnow_xform1.S',
+		'x86/3dnow_xform2.S',
+		'x86/3dnow_xform3.S',
+		'x86/3dnow_xform4.S',
+		'x86/3dnow_normal.S',
+		'x86/sse_xform1.S',
+		'x86/sse_xform2.S',
+		'x86/sse_xform3.S',
+		'x86/sse_xform4.S',
+		'x86/sse_normal.S',
+		'x86/read_rgba_span_x86.S',
+	]
+	
+	X86_API = [
+		'x86/glapi_x86.S',
+	]
+	
+	X86_64_SOURCES = [
+		'x86-64/xform4.S',
+	]
+	
+	X86_64_API = [
+		'x86-64/glapi_x86-64.S',
+	]
+	
+	SPARC_SOURCES = [
+		'sparc/clip.S',
+		'sparc/norm.S',
+		'sparc/xform.S',
+	]
+	
+	SPARC_API = [
+		'sparc/glapi_sparc.S',
+	]
+	
+	if x86 and gcc:
+		ASM_SOURCES = ASM_C_SOURCES + X86_SOURCES 
+		API_SOURCES = X86_API
+	else:
+		ASM_SOURCES = []
+		API_SOURCES = []
+	
+	SOLO_SOURCES = \
+		MAIN_SOURCES + \
+		MATH_SOURCES + \
+		VBO_SOURCES + \
+		VF_SOURCES + \
+		STATETRACKER_SOURCES + \
+		SHADER_SOURCES + \
+		ASM_SOURCES + \
+		SLANG_SOURCES
+	
+	mesa = env.ConvenienceLibrary(
+		target = 'mesa',
+		source = SOLO_SOURCES,
 	)
-	Export('glapi')
+	Export('mesa')
+	
+	if not dri:
+		glapi = env.ConvenienceLibrary(
+			target = 'glapi',
+			source = GLAPI_SOURCES + API_SOURCES,
+		)
+		Export('glapi')