st/dri: change dri_extensions to dri_helpers

These files provide helper structs and functions for dri2.c and drisw.c,
and name change better conveys that.

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/state_trackers/dri/Makefile.sources

@@ -3,8 +3,8 @@ common_SOURCES := \
 	dri_context.h \
 	dri_drawable.c \
 	dri_drawable.h \
-	dri_extensions.c \
-	dri_extensions.h \
+	dri_helpers.c \
+	dri_helpers.h \
 	dri_query_renderer.c \
 	dri_query_renderer.h \
 	dri_screen.c \

src/gallium/state_trackers/dri/dri2.c

@@ -48,7 +48,7 @@
 #include "dri_screen.h"
 #include "dri_context.h"
 #include "dri_drawable.h"
-#include "dri_extensions.h"
+#include "dri_helpers.h"
 #include "dri_query_renderer.h"
 #include "dri2_buffer.h"
 

src/gallium/state_trackers/dri/dri_helpers.h

@@ -20,8 +20,8 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#ifndef DRI_EXTENSIONS_H
-#define DRI_EXTENSIONS_H
+#ifndef DRI_HELPERS_H
+#define DRI_HELPERS_H
 
 extern const __DRI2fenceExtension dri2FenceExtension;
 

src/gallium/state_trackers/dri/drisw.c

@@ -46,7 +46,7 @@
 #include "dri_screen.h"
 #include "dri_context.h"
 #include "dri_drawable.h"
-#include "dri_extensions.h"
+#include "dri_helpers.h"
 #include "dri_query_renderer.h"
 
 DEBUG_GET_ONCE_BOOL_OPTION(swrast_no_present, "SWRAST_NO_PRESENT", FALSE);