ota: Generate recovery-from-boot.p file

This may be wanted to update the recovery with system updates

Change-Id: Iacd41be7a8018cbc08b2606485d446756910f506
Change CM recovery install script filename [1/2]

This is part 1/2 to maintain backwards compatibility with CWM's
verify_root_and_recovery() function. CWM checks if install-recovery.sh
exists and has an executable flag set, then offers to disable the script
for the user. CM now controls this with the persist.sys.recovery_update
property which is configurable via settings, so we don't need to
double-check this.

This changes the name of the recovery install script to
install-cm-recovery.sh.

Change-Id: Ie08d428cfd092a1de10973ba5ffc326ccdb1a369
keys: avoid duplicating recovery keys

Setting PRODUCT_EXTRA_RECOVERY_KEYS duplicates the default key and
makes it so we can't set an extra key earlier in the build

Change-Id: I239d9994d9ad40b1779877ea2e89b55bd02e4c00
Revert "Allow devices to specify certain ro. props via TARGET_UNIFIED_DEVICE"

This reverts commit 115999f22860860ea115d0c0c628577006baeeb9.
Allow devices to specify certain ro. props via TARGET_UNIFIED_DEVICE

This modifies buildinfo.sh to not set model, name, description, and
fingerprint in build.prop. These can then be set via custom init
lib.
This also fixes ota_from_target_files to function without these
props being preset.

Change-Id: I945b2c38e60b207d2d0f82b34f4f230ac21b0657
ota: Allow devices to skip generation of recovery-from-boot.p

* Not all devices have a real recovery partition, so those devices
  should skip this generation step.

Change-Id: I4abc3f92b879e6997e4874543ec9772c3179b1d0
Build - Persistence - Add installer support [1/3]

Change-Id: I768bb30498f08b41d39db7ed887696663ba91767
Signed-off-by: Stefano Mura [STELIX] <ssspinni@gmail.com>
Use CM standard qcom naming

Change-Id: I360b3dcf1fe82140a7993189e881f9d77b571bef
build: Don't run backuptool on GMS builds

Change-Id: I5dde27f9d16b88049171db9805221d92e67f3e5d
Merge branch 'kk' of https://github.com/CarbonDev/android_build into kk