mesa: misc GLX_INTEL_swap_event fixes

Fixup a few issues found through testing:
  - update GLX names to match glproto
  - register DRI2WireToEvent so it actually gets called

Signed-off-by: Robert Bragg <robert@linux.intel.com>

include/GL/glx.h

@@ -518,8 +518,12 @@ typedef struct {
 } GLXPbufferClobberEvent;
 
 typedef struct {
+    int type;
+    unsigned long serial;	/* # of last request processed by server */
+    Bool send_event;		/* true if this came from a SendEvent request */
+    Display *display;		/* Display the event was read from */
+    GLXDrawable drawable;	/* drawable on which event was requested in event mask */
     int event_type;
-    GLXDrawable drawable;
     int64_t ust;
     int64_t msc;
     int64_t sbc;

include/GL/glxext.h

@@ -698,10 +698,10 @@ typedef void ( * PFNGLXJOINSWAPGROUPSGIXPROC) (Display *dpy, GLXDrawable drawabl
 
 #ifndef GLX_INTEL_swap_event
 #define GLX_INTEL_swap_event
-#define GLX_BUFFER_SWAP_COMPLETE_MASK      0x10000000
-#define GLX_EXCHANGE_COMPLETE              0x8024
-#define GLX_BLIT_COMPLETE                  0x8025
-#define GLX_FLIP_COMPLETE                  0x8026
+#define GLX_BUFFER_SWAP_COMPLETE_INTEL_MASK 0x10000000
+#define GLX_EXCHANGE_COMPLETE_INTEL	    0x8024
+#define GLX_BLIT_COMPLETE_INTEL		    0x8025
+#define GLX_FLIP_COMPLETE_INTEL		    0x8026
 #endif
 
 #ifndef GLX_SGIX_swap_barrier