scons: Build progs.

Just demos and trivial dirs for starters.
diff --git a/progs/trivial/SConscript b/progs/trivial/SConscript
new file mode 100644
index 0000000..edb8386
--- /dev/null
+++ b/progs/trivial/SConscript
@@ -0,0 +1,163 @@
+Import('env')
+
+if not env['GLUT']:
+    Return()
+
+env = env.Clone()
+
+env.Prepend(LIBS = ['$GLUT_LIB'])
+
+progs = [
+    'clear-fbo-tex',
+	'clear-fbo',
+	'clear-scissor',
+	'clear-undefined',
+	'clear-repeat',
+	'clear',
+	'dlist-dangling',
+	'dlist-edgeflag-dangling',
+	'dlist-edgeflag',
+	'dlist-degenerate',
+	'drawarrays',
+	'drawelements',
+	'drawrange',
+	'flat-clip',
+	'fs-tri',
+	'line-clip',
+	'line-cull',
+	'line-smooth',
+	'line-stipple-wide',
+	'line-userclip-clip',
+	'line-userclip-nop-clip',
+	'line-userclip-nop',
+	'line-userclip',
+	'line-wide',
+	'line',
+	'lineloop-clip',
+	'lineloop-elts',
+	'lineloop',
+	'linestrip-flat-stipple',
+	'linestrip-stipple-wide',
+	'linestrip-stipple',
+	'linestrip',
+	'long-fixed-func',
+	'pgon-mode',
+	'point-clip',
+	'point-param',
+	'point-sprite',
+	'point-wide',
+	'point-wide-smooth',
+	'point',
+	'poly-flat',
+	'poly-flat-clip',
+	'poly-flat-unfilled-clip',
+	'poly-unfilled',
+	'poly',
+	'quad-clip-all-vertices',
+	'quad-clip-nearplane',
+	'quad-clip',
+	'quad-degenerate',
+	'quad-flat',
+	'quad-offset-factor',
+	'quad-offset-unfilled',
+	'quad-offset-units',
+	'quad-tex-2d',
+	'quad-tex-3d',
+	'quad-tex-alpha',
+	'quad-tex-pbo',
+	'quad-unfilled-clip',
+	'quad-unfilled-stipple',
+	'quad-unfilled',
+	'quad',
+	'quads',
+	'quadstrip-cont',
+	'quadstrip-flat',
+	'quadstrip',
+	'tri-alpha',
+	'tri-blend-color',
+	'tri-blend-max',
+	'tri-blend-min',
+	'tri-blend-revsub',
+	'tri-blend-sub',
+	'tri-blend',
+	'tri-clip',
+	'tri-cull-both',
+	'tri-cull',
+	'tri-dlist',
+	'tri-edgeflag',
+	'tri-fbo-tex',
+	'tri-fbo',
+	'tri-flat-clip',
+	'tri-flat',
+	'tri-fog',
+	'tri-fp',
+	'tri-fp-const-imm',
+	'tri-lit',
+	'tri-mask-tri',
+	'tri-orig',
+	'tri-query',
+	'tri-repeat',
+	'tri-scissor-tri',
+	'tri-stencil',
+	'tri-tex',
+	'tri-tex-3d',
+	'tri-tri',
+	'tri-unfilled-edgeflag',
+	'tri-unfilled-clip',
+	'tri-unfilled-smooth',
+	'tri-unfilled-tri',
+	'tri-unfilled-tri-lit',
+	'tri-unfilled-userclip-stip',
+	'tri-unfilled-userclip',
+	'tri-unfilled',
+	'tri-userclip',
+	'tri-z-eq',
+	'tri-z',
+	'tri',
+	'trifan-flat',
+	'trifan-flat-clip',
+	'trifan-flat-unfilled-clip',
+	'trifan-unfilled',
+	'trifan',
+	'tristrip-clip',
+	'tristrip-flat',
+	'tristrip',
+	'vbo-drawarrays',
+	'vbo-drawelements',
+	'vbo-drawrange',
+	'vp-array',
+	'vp-array-int',
+	'vp-clip',
+	'vp-line-clip',
+	'vp-tri',
+	'vp-tri-swap',
+	'vp-tri-tex',
+	'vp-tri-imm',
+	'vp-tri-cb',
+	'vp-tri-cb-pos',
+	'vp-tri-cb-tex',
+	'vp-unfilled',
+]
+
+for prog in progs:
+    prog = env.Program(
+        target = prog,
+        source = prog + '.c',
+    )
+
+# auto code generation
+#getprocaddress: getprocaddress.c getproclist.h
+
+#getproclist.h: $(TOP)/src/mesa/glapi/gl_API.xml getprocaddress.c getprocaddress.py
+#	python getprocaddress.py > getproclist.h
+
+
+#readtex.h: $(TOP)/progs/util/readtex.h
+#	ln -s $(TOP)/progs/util/readtex.h .
+
+#readtex.c: $(TOP)/progs/util/readtex.c
+#	ln -s $(TOP)/progs/util/readtex.c .
+
+
+#extfuncs.h:  $(TOP)/progs/util/extfuncs.h
+#	cp $< .