init: Load init.carrier.rc for carrier-specific bits

Change-Id: I941230f035182e27bd62316b594ac457316c37b6
Merge pull request #15 from CyanogenMod/cm-10.1

init: Load init.carrier.rc for carrier-specific bits
Merge branch 'jb2' of github.com:CarbonDev/android_system_core into jb2