tree fd82993eae84d5b726327056d1d5f47abac7b7ac
parent bc3e6b00d2ed50d5fd77f2a74348608e52935e6d
author Sen Jiang <senj@google.com> 1455132380 -0800
committer Sen Jiang <senj@google.com> 1457383953 +0000

Include IMGDIFF operation in minor version 4 or up.

Try imgdiff if both source and target contains gzip.

Test: unit test & generated a payload with boot.img
Bug: 26675118
Change-Id: I2861d9b953ffbdec44fdfb42cff5687698ea205e