Update recovery.fstab for CWMR 6.x

Change-Id: Ia16a02f97207381af8de557ca623c5717c55e72d
Don't build alsa.omap3.so with read-only relocations

This causes the world to explode when loading this module for unknown
reasons.
Update prebuilt libaudio.so and alsa.omap3.so

The new modules are built from inside a CM 10.1 source tree using the CM
10.1 toolchain and build system.
Add instructions for building audio HAL components from source