Cleanup init scripts & fix fstab mount

* Use makefile to fix the fstab bootloader name, and dynamically
  adjust service details for device-specific quirks.
* Remove dead vold.fstab
* Move Bluetooth services to dedicated init scripts

Conflicts:
	ramdisk/init.msm7x27.rc

(cherry picked from commit fe277cc83b068153895aeaaefd8943bf841c5adf)

Change-Id: I8a0f7ccb4ff889288e7275f5034a0576eaadab63