lots of stuff :-)
temporarily purged terminal resize code as it was not portable (to win32)
fixed looping for MOD and S3M: looped 1 sample too late
implemented format detection by magic in loaders
removed loader_XXX_loadfile stuff from loaders and moved this to the generic loader
made loader stuff more flexible
implemented header based format detection for generic loader
overhauled keybinding stuff in ui_ncurses
fixed lots of warnings
some cleanups