tree 7924f282e7c95e7b304acc1102aaa1e2a5bfaa96
parent 06f6227f1d01d3457dbe209bef559778d5c330a2
author Tianjie Xu <xunchang@google.com> 1488926654 -0800
committer Tianjie Xu <xunchang@google.com> 1489691389 -0700

More cleanup to imgdiff & imgpatch

Also remove the utils in applypatch and replace them with the
corresponding libbase functions.

Test: recovery tests pass.
Change-Id: I77254c141bd3e7d3d6894c23b60e866009516f81