android: add zip and unrar external repos

Change-Id: Iecdf76bb913f6b70c3106edf4dd20723db485884
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
android: add libtruezip repo

Change-Id: I92d2b241cfcdaec32136466015d9747b33cd989e
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
copy vendor/cm/bootimage/Android.mk to kernel/

Change-Id: I62dd0f89403dc032dd8d6359cee702b7ba58e87e