iPhone interruption patch / SDL 1.3

Eric Wing to Sam

I've been sitting on this too long. I need to push.
It's untested because of the unrelated crashing bug I've been experiencing.
Also have a fix for SIZEOF_VOIDP in the config for both iPhone and Mac.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404102

include/SDL_config_iphoneos.h

@@ -35,6 +35,12 @@ typedef unsigned int uint32_t;
 typedef unsigned long uintptr_t;
 #endif /* !_STDINT_H_ && !HAVE_STDINT_H */
 
+#ifdef __LP64__
+#define SIZEOF_VOIDP 8
+#else
+#define SIZEOF_VOIDP 4
+#endif
+
 #define SDL_HAS_64BIT_TYPE	1
 
 #define HAVE_ALLOCA_H		1