In certain cases, we may have no mapping of ZERO or NONZERO blocks in
the image (such as squashfs at the moment). Don't write those groups if
they are empty.
Change-Id: I82aa05fbbd79130b08868585edd5298e531c4f5a
This caught a few bugs/syntax errors (a few character classes were not
escaped properly in regex patterns, some indentation was illegal,
etc).
Change-Id: I50637607524e68c4fb9cad7167f58a46b8d26b2c
Replace the xdelta/xz-based block OTA generation with a new system
based on the existing bsdiff/imgdiff tools.
Bug: 16984795
Change-Id: Ia9732516ffdfc12be86260b2cc4b1dd2d210e886