Track CM's bootable/recovery

This is needed for samsung devices (aries and s2 series) that have
recovery built into the boot.img and flashed every time.

PS2: also add external/yaffs2 and external/zlib, required for
exynos devices

PS3: actually add changes from PS2 derp.

Change-Id: Iff02afc55052c35b6476867a6297322a2e3f0130
track Launcher2

Change-Id: Ic746ccf437f3e78f84347887aeb24cf351bd85eb
Signed-off-by: Roman Birg <romanbirg@gmail.com>
don't track separate mako kernel repo

Change-Id: I681d8ccfb2a0449d04c9edced4b1d883ee957c1f
Signed-off-by: Roman Birg <romanbirg@gmail.com>
Track our own DownloadProvider

so we can add more info to DownloadCompleted notifications

Change-Id: I6d35881e7a88916dd0e3bdebe434c2ad72bab418