Replace remaining gcc format attributes by macro GCC_FMT_ATTR (format checking)

Replace the remaining format attribute printf by macro
GCC_FMT_ATTR which uses gnu_printf (if supported).

v2
* Removal of dyngen specific code is now done in a separate patch.
* Handle attribute in new ui/spice-display.c, too.

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Signed-off-by: NBlue Swirl <blauwirbel@gmail.com>

cpu-all.h

@@ -773,7 +773,7 @@ void cpu_dump_statistics (CPUState *env, FILE *f,
                           int flags);
 
 void QEMU_NORETURN cpu_abort(CPUState *env, const char *fmt, ...)
-    __attribute__ ((__format__ (__printf__, 2, 3)));
+    GCC_FMT_ATTR(2, 3);
 extern CPUState *first_cpu;
 extern CPUState *cpu_single_env;
 

ui/spice-display.c

@@ -29,8 +29,7 @@
 
 static int debug = 0;
 
-static void __attribute__((format(printf,2,3)))
-dprint(int level, const char *fmt, ...)
+static void GCC_FMT_ATTR(2, 3) dprint(int level, const char *fmt, ...)
 {
     va_list args;