st/mesa: enable ARB_explicit_attrib_location and EXT_separate_shader_objects

Gallium drivers pass all piglit tests for the two (there are 12 tests
for separate_shader_objects and 5 tests for explicit_attrib_location),
and I was told the extensions don't need any driver-specific code.

I made them dependent on PIPE_CAP_GLSL.

Signed-off-by: Brian Paul <brianp@vmware.com>
1 file changed