* Set engine version to 3.5
* Added RPGCode commands:
- menufont
- menubuttongraphic
- menucolor
* Added menu related flags:
	tkMNUFNT_MAIN   = 0,      // main menu font
	tkMNUFNT_STATS  = 1,      // stats font
	tkMNUFNT_INFO   = 2,      // info font
	tkMNUFNT_OPTS   = 3,      // options font
	tkMNUFNT_LSTS   = 4      // lists font

	tkMNUFNT_PROP_SIZE       = 29,      // Size of the menu font
	tkMNUFNT_PROP_DEFCOLOR   = 30,      // Default color of the menu font
	tkMNUFNT_PROP_HICOLOR    = 31,      // Highlight color of the menu font
	tkMNUFNT_PROP_DISCOLOR   = 32,      // Disabled color of the menu font
	tkMNUFNT_PROP_BOLD       = 33,      // Bold setting of the menu font
	tkMNUFNT_PROP_ITALICS    = 34,      // Italics setting of the menu font
	tkMNUFNT_PROP_UNDERLINE  = 35,      // Underline setting of the menu font
	tkMNUFNT_PROP_CENTER     = 36,      // Centered setting of the menu font
	tkMNUFNT_PROP_OUTLINE    = 37      // Outline setting of the menu font