debug: instruments/*.asm, music/*.asm converted to new DEF_FUNC, DEF_LABL, DEF_CONST macro usage
debug: processables/*.asm converted to new DEF_FUNC, DEF_LABL, DEF_CONST macro usage
debug: util/*.asm refactored to use DEF_FUNC, DEF_FUNC_NOTRACE, DEF_LABL, DEF_CONST macro usage
application: startup code now in file util/application_head.asm, debug: removed old CS_* macros, minor bug fixes