Merge branch 'ext-provoking-vertex'

Conflicts:

	docs/relnotes-7.6.html
	progs/tests/Makefile
	src/gallium/drivers/softpipe/sp_prim_vbuf.c
	src/glx/x11/indirect.c
	src/mesa/glapi/Makefile
	src/mesa/glapi/dispatch.h
	src/mesa/glapi/glapioffsets.h
	src/mesa/glapi/glapitable.h
	src/mesa/glapi/glapitemp.h
	src/mesa/glapi/glprocs.h
	src/mesa/main/dlist.c
	src/mesa/main/enums.c
	src/mesa/sparc/glapi_sparc.S
	src/mesa/x86-64/glapi_x86-64.S
	src/mesa/x86/glapi_x86.S

src/mesa/state_tracker/st_atom_rasterizer.c

@@ -102,6 +102,9 @@ static void update_raster_state( struct st_context *st )
    if (ctx->Light.ShadeModel == GL_FLAT)
       raster->flatshade = 1;
 
+   if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION_EXT)
+      raster->flatshade_first = 1;
+
    /* _NEW_LIGHT | _NEW_PROGRAM
     *
     * Back-face colors can come from traditional lighting (when