wifi: cleanup wpa_supplicant config

Change-Id: I63c0964099aef4a5454b4222b6aa290e475e3260
don't disable jit cache

Dalvik performance seems to drop down to about a third on some
benchmark with this disabled. This will cost 3-6 MB of RAM.

http://source.android.com/devices/low-ram.html#jit

Change-Id: I7a63c508f28a35586adda5e649f7af6585381916
remove unneeded live wallpaper packages

These are already called elsewhere. IIRC librs_jni was
actually needed at some point (CM9 days... or not :P).

Change-Id: I7d2abd4c256b82d2edbc0fec75db0fa0ccb127b6
change usbdisk write permissions

Users are not able to write to /storage/usbdisk0
because they are not part of the media_rw (1023) group.
Remove the write restriction.

Change-Id: I1ccca35405707f9fe23cf86204fdbea666b11813
enable ksm by default

Needs: http://review.cyanogenmod.org/#/c/57256/

Change-Id: I4013ffc09834e994490e386a816a7ea5c76407db
use qualcomm bionic optimizations

Initially for krait,  but there seems to be a slight performance
improvement on cortex-a5 as well.

Change-Id: Iadb0c3f4aeb7929fc8618519e5826969a22e63cc