vendor: Prepare for build: Change JDK 6 to JDK 7

* check https://android-review.googlesource.com/#/c/111395
  java 6 lived with many happy moments but the truth is that this old
  in Java 7 is built without problems :p

Change-Id: Ic9f8a80bbbb559b289adb49b2851070f378c56f0
Merge "vendor: Prepare for build: Change JDK 6 to JDK 7" into pac-4.4