grouper: Nexus 7 (Wi-Fi) binaries for Android 4.3 (JWR66V)

Change-Id: I4e3f385df9517871edc44499dbe79168c5903efa
Merge pull request #8 from dhacker29/cm-10.2

grouper: Nexus 7 (Wi-Fi) binaries for Android 4.3 (JWR66V)
Upgrade blobs to JWR66Y

Change-Id: I09ba5d59a8b9dc70b964363b71daddf55d0e5dd4