Changed required execution environment to Java 7

Change-Id: I2c268c169b8706d8529ec35815a80b95a1c001f9
Updated vendor information.

Change-Id: Ied92beb670a90c499876bcd9c2711409f2b94313
Some clean-up.

Change-Id: I7e48b813b07708a8a24febcee28cb345dd438c5c
Move static methods from URIImpl to URIs.

Change-Id: I60e4fc59e5cb3b7d5521ed473b787ca9382804f1