(svn r8605) -Codechange: [OSX] changed all objective C to objective C++

This will permanently solve the issue where compilation on OSX broke because C++ code was added to some header files

   -Note: (important if you develop mac specific code)
   taken from http://developer.apple.com/releasenotes/Cocoa/Objective-C++.html           
    gdb lacks an integrated C++ with Objective-C parser. This means that gdb won't be able to evaluate expressions that contain both C++ and Objective-C constructs.
    gdb assumes that the language for ".mm" files is C++.
    you can change it to objective C by typing: (gdb) set language objc 
    Mixing C++ and objective C has some limitation (see link for all of them)

src/debug.h

@@ -3,10 +3,6 @@
 #ifndef DEBUG_H
 #define DEBUG_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif //__cplusplus
-
 /* Debugging messages policy:
  * These should be the severities used for direct DEBUG() calls
  * maximum debugging level should be 10 if really deep, deep
@@ -111,8 +107,4 @@ const char *GetDebugString(void);
 	}\
 }
 
-#ifdef __cplusplus
-}
-#endif //__cplusplus
-
 #endif /* DEBUG_H */