We are vanir...resistance is futile

Change-Id: I1dfee7c72632cd4260897ddf2e8be6e8391e0527
Earlysquisher: optipng before blockimgdiff

Change-Id: Ibab8a9ee051a525424265b8a0b1dd6632dacf522
Extensive and thoughtful modifications to vendor_module_check

Change-Id: Ifa25c0d9bb04de5d82ca33d5d94b78adeaed42c7
Merge remote-tracking branch 'upstream/L5' into L5