Made typedef for SDL_bool the same as the other typedefs.

If this causes problems on any compiler, please report a bug to
http://bugzilla.libsdl.org/
and include the platform and version of compiler you're using.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404021

include/SDL_stdinc.h

@@ -94,7 +94,7 @@
 #endif
 
 /* Basic data types */
-typedef enum SDL_bool
+typedef enum
 {
     SDL_FALSE = 0,
     SDL_TRUE = 1