"LRX21W"
Increment Android versions to 5.0.1

Change-Id: I2880123f0d1215f2028e6d3bc3f88fee5714ae74
"LRX21X"
"LRX21Y"
"LRX21Z"
"LRX22B"
"LRX22C"
Merge tag 'android-5.0.1_r1' into aosp-5.0

Android 5.0.1 release 1
build: Ensure /system unmounted at install start

Account for the possibility that a user has mounted system manually
before installing the FullOTA package.
Don't build block-based OTA packages.
Merge remote-tracking branch 'mw/aosp-5.0' into aosp-5.0