(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)

/* $Id$ */
#ifndef NEWGRF_TEXT_H
#define NEWGRF_TEXT_H

/** @file
 * Header of Action 04 "universal holder" structure and functions
 */

StringID AddGRFString(uint32 grfid, uint16 stringid, byte langid, bool new_scheme, const char *text_to_add, StringID def_string);
StringID GetGRFStringID(uint32 grfid, uint16 stringid);
char *GetGRFString(char *buff, uint16 stringid, const char* last);
void CleanUpStrings(void);
void SetCurrentGrfLangID(const char *iso_name);
char *TranslateTTDPatchCodes(const char *str);

#endif /* NEWGRF_TEXT_H */