fireball: Use by-name partitions in fstab

* Also change encryption to use the 'extra' partition.
* Also remove recovery specific fstab

Change-Id: I947530ea5d3c80fb7e483a4866fc0fad3cc54ac6
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_htc_fireball into cd-4.4