Add menucolors

-Add a boolean option menucolors to toggle menu color
-Add MENUCOLOR -config file option

TODO:
-Better support for win32
-Support more windowports
-Update Guidebook
-Allow changing menucolor lines in-game

win/win32/mhmap.c

@@ -45,7 +45,6 @@ static void nhcoord2display(PNHMapWindow data, int x, int y, LPRECT lpOut);
 #if (VERSION_MAJOR < 4) && (VERSION_MINOR < 4) && (PATCHLEVEL < 2)
 static void nhglyph2charcolor(short glyph, uchar* ch, int* color);
 #endif
-static COLORREF nhcolor_to_RGB(int c);
 
 HWND mswin_init_map_window () {
 	static int run_once = 0;