buildinfo: only set ro.build.product on non-unified devices

Change-Id: I5dccba2172dade3dacc55d832a2042fce306b5f5
core: Enable -mcpu=cortex-a9 flag for Cortex-A9 cpu variant

Change-Id: I9294a518bcdc21ccbae72eadd9f3c1a12982d028
core: armv7-a-neon.mk: Add missing endif

Change-Id: Id6f9c952d01d3c980115a52605d9c86038b3b5bd
otasigcheck: Go back to the key-rewrite check.

Using an intermediate file had the at-the-time unintended but good
side-effect of making execution failures (absent script, no
busybox in recovery, bad selinux setup) pass gracefully. Since this
check is intended as a blacklist, blocking the update when only
sure that breakage will ensue, that was a nice thing to get.

Checking the return code, while cleaner, is making non-key-related
failures like those mentioned above abort execution of the script.
The key itself isn't even checked, yet we're aborting because of it.

So go back to the original behavior: In case we're not sure... pass.

To do:
This can be cleaned up differently, and to the same effect, by returning
an explicit error code from the script and aborting when that error
comes up. Change the script to do that and come back here. :)

Change-Id: Ic9d7c3128047c25f31e2ef416c9df4d21ca0a1a8
Revert "otasigcheck: Go back to the key-rewrite check."

sigcheck now returns an explicit abort code

This reverts commit bab150d79c7b9b1f233fc3592b69a42f0b38fbd8.

Change-Id: I2b5860ea427a4db7e29b55cc632b92c6e2910494
Merge remote-tracking branch 'upstream/cm-12.0' into cm-12.0