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

Change-Id: I7e4efb36e81254025c1371e84508e8276c6188f9
Merge pull request #9 from dhacker29/cm-10.2

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

Change-Id: Ice234954803d330602a61bfde2e7d9add033aadf