power: Manage io_is_busy
Enable TARGET_ARCH_LOWMEM

 * Requires http://review.cyanogenmod.org/#/c/47757/
Reduce max hidden apps

 * Also remove unsupported use.non-omx.mp3.decoder
Change arcos graphics.c with ivendors graphics.c

This change is important for the touch version of CWM. We got a pink color bug with the old one. Now it works fine.
Merge branch 'cm-10.1' of https://github.com/arco/android_device_samsung_ancora into cm-10.1