[GLExtensions] Pull in all the function pointers for OpenGL 1.1, This removes the need for a couple compile time differences between GL and GLES3 mode.

Externals/GL/GL/gl.h

@@ -767,7 +767,7 @@ typedef double		GLclampd;	/* double precision float in [0,1] */
 #define GL_ALL_CLIENT_ATTRIB_BITS 		0xFFFFFFFF
 #define GL_CLIENT_ALL_ATTRIB_BITS 		0xFFFFFFFF
 
-
+#ifdef GL_GLEXT_PROTOTYPES
 
 /*
  * Miscellaneous
@@ -1470,6 +1470,7 @@ GLAPI void GLAPIENTRY glPushName( GLuint name );
 
 GLAPI void GLAPIENTRY glPopName( void );
 
+#endif
 
 
 /*