blockdiff.py: a binary file block differ

This is a simple tool that'll output sequences of corresponding blocks
in two binary files that are not identical. Together with paycheck.py
-b/-B, it can be used to trace the origin of a block that did not update
correctly wrt a reference target partition.

BUG=chromium-os:34911,chromium-os:33607
TEST=Diffing two partition files shows the correct block differences

Change-Id: I9ccf011bbc275a039875d23b5ab01266587bff60
Reviewed-on: https://gerrit.chromium.org/gerrit/43040
Reviewed-by: Gilad Arnold <[email protected]>
Tested-by: Gilad Arnold <[email protected]>
Commit-Queue: Gilad Arnold <[email protected]>
1 file changed