improved installer
minor improvement to XML parsing
introduced basic CD playback
introduce a message window
added required XML -> C++ connverter
Merge branch 'master' of https://github.com/esohns/Yarp

Conflicts:
	engine/rpg_engine_event_manager.cpp
	graphics/rpg_graphics_XML_tree.cpp
	test_u/character/player/character_generator_gui.cpp