Start of some apps/ and wps cleanup work... Move everything related to the actual drawing of the wps into apps/gui/wps_engine, things related to the actual screen are in apps/gui/music_screen.c (names are temporary unless noone comes up with anything better)
No real code changes.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22062 a1c6a512-1295-4272-9138-f99709370657
23 files changed