* GPL MD4 implementation

* Removed obsolete compilation instructions from the id readme
* Removed MD4 license from the id readme

code/qcommon/qcommon.h

@@ -726,7 +726,7 @@ void 		Com_Quit_f( void );
 int			Com_EventLoop( void );
 int			Com_Milliseconds( void );	// will be journaled properly
 unsigned	Com_BlockChecksum( const void *buffer, int length );
-unsigned	Com_BlockChecksumKey (void *buffer, int length, int key);
+unsigned	Com_BlockChecksumKey ( const void *buffer, int length, int key);
 int			Com_HashKey(char *string, int maxlen);
 int			Com_Filter(char *filter, char *name, int casesensitive);
 int			Com_FilterPath(char *filter, char *name, int casesensitive);