Suppress certain GCC warnings in auto-generated code.

- Don't warn for references to deprecated functions in xorg_symbols.
- Ignore functions generated by gl_apitemp.py that are never used.

Signed-off-by: Jamey Sharp <jamey@minilop.net>
Signed-off-by: Keith Packard <keithp@keithp.com>
(cherry picked from commit fab74d1081)

glx/glapi.c

@@ -114,10 +114,15 @@ warn(void)
    }
 }
 
+#if defined(__GNUC__) && (__GNUC__ > 2)
+#define possibly_unused __attribute((unused))
+#else
+#define possibly_unused
+#endif
 
 #define KEYWORD1 static
 #define KEYWORD1_ALT static
-#define KEYWORD2 GLAPIENTRY
+#define KEYWORD2 GLAPIENTRY possibly_unused
 #define NAME(func)  NoOp##func
 
 #define F NULL

hw/xfree86/loader/sdksyms.sh

@@ -2,6 +2,7 @@
 
 cat > sdksyms.c << EOF
 /* This file is automatically generated by sdksyms.sh. */
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 
 #ifdef HAVE_XORG_CONFIG_H
 #include <xorg-config.h>