GCC Freedom

Based on this commit: https://github.com/ModdedPA/android_build/commit/bb921bab55265e9494305747f3d2ac9cfc73f075
Show ARM & AND GCC version in build startup
Add the Custom Toolchain Triggers
Some compiler flags changes
Fix build
Partially revert "Some compiler flags changes"

I thought these changes causes the bootloop to occur, but we had a fix now.
Merge remote-tracking branch 'upstream/kitkat' into kitkat