build: Add new public keys to recovery

Change-Id: I11dea464297813be36e60c23728dde8893535c46
GCC Freedom
GCC 4.8 Build Fix
Move Toolchain Define to Device Common files
Add Default Toolchain revision if not defined in BoardConfig.mk
Fix derp
Add GCC Variables to DumpVar
Merge https://github.com/CyanogenMod/android_build into kk