Link fewer common objects into Gallium winsys layers.

These are useless or even harmful due to referencing symbols no longer
available in the Gallium build.

src/mesa/drivers/dri/Makefile.template

@@ -2,13 +2,15 @@
 
 MESA_MODULES = $(TOP)/src/mesa/libmesa.a
 
-COMMON_SOURCES = \
-        ../../common/driverfuncs.c \
+COMMON_GALLIUM_SOURCES = \
         ../common/utils.c \
-        ../common/texmem.c \
         ../common/vblank.c \
         ../common/dri_util.c \
-        ../common/xmlconfig.c \
+        ../common/xmlconfig.c
+
+COMMON_SOURCES = $(COMMON_GALLIUM_SOURCES) \
+        ../../common/driverfuncs.c \
+        ../common/texmem.c \
         ../common/drirenderbuffer.c
 
 COMMON_BM_SOURCES = \

src/mesa/drivers/dri/intel_winsys/Makefile

@@ -22,7 +22,7 @@ DRIVER_SOURCES = \
 	intel_batchpool.c
 
 C_SOURCES = \
-	$(COMMON_SOURCES) \
+	$(COMMON_GALLIUM_SOURCES) \
 	$(COMMON_BM_SOURCES) \
 	$(DRIVER_SOURCES)