XQuartz: Include version info for CrashReporter

(cherry picked from commit b4992755c3)

hw/xquartz/darwin.c

@@ -142,6 +142,8 @@ const int NUMFORMATS = sizeof(formats)/sizeof(formats[0]);
 #define XORG_RELEASE "?"
 #endif
 
+const char *__crashreporter_info__ = "X.Org X Server " XSERVER_VERSION "Build Date: " BUILD_DATE;
+
 void DDXRingBell(int volume, int pitch, int duration) {
   // FIXME -- make some noise, yo
 }