Fix don't replace recovery
Add X-Droid version to build.prop
env: implement the repodiff command

 sample usage:
   repodiff ics
   repodiff github/ics --numstat
   repodiff android-4.0.4_r1.2 android-4.0.4_r2

Change-Id: Id1c1e504c75676707e59f051fd5ff9ce748d4297
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>

Conflicts:
	envsetup.sh
cout: move to $out

Change-Id: I3b5bf8a5f62dcdf267662bb97a2073150152cfa6
Don't use blocks. Go back to old style zip.
fix up ota_from_target_files symlink detection.
Add backuptool(addon.d support)
Fix things

-fix backuptool --> set_perm to set_metadata
-delete recovery-from-boot.p