Edify: Add AssertSomeBaseband

Allow releasetools.py to assert a baseband version. Works just like
AssertSomeBootloader.

Change-Id: Ic8eb341cef1d777d983be25ba21a3bc545819c29
Add a new build target called "cmupdaterincremental".

This can be used to generate an incremental update after make bacon (or
any other target that compiles a full build) was run.
Example command:
INCREMENTAL_SOURCE_BUILD_ID=f1785074ab INCREMENTAL_SOURCE_TARGETFILES_ZIP=out/target/product/mb526/obj/PACKAGING/target_files_intermediates/cm_mb526-target_files-f1785074ab.zip WITHOUT_CHECK_API=true ONE_SHOT_MAKEFILE=cmupdaterincremental make cmupdaterincremental

Change-Id: Ia193e7bf437a254e9b32e87b7b370c7e265a4827
Merge pull request #7 from xdarklight/cm-11.0

Add a new build target called "cmupdaterincremental".
Merge remote-tracking branch 'cyanogen/cm-11.0' into cm-11.0
ota_from_target_files: Validate signatures after possible data wipe

If the data is being wiped, we want to validate the signature after
this step. This is also a good check that the data wipe succeeded.

Change-Id: Iaecfddfb2010944de0c97e7bb21d8e581f20deec
Merge remote-tracking branch 'cyanogen/cm-11.0' into cm-11.0
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0