Update ro.vold.switchablepair for new storage locations

Thanks to XDA user leapinlar for noticing these were out of date.

Change-Id: I3fc5950053ee17477a6fea3bb4a35fb26d788a51
Prune system.prop of obsolete properties

Change-Id: I6b69d6bfbca7ebdd0b4e535600093b193be256e7
Add <linux/omapfb.h> header needed for hwcomposer
Enable building of hwcomposer.omap3
Build audio HAL components from source instead of using prebuilts