Changed required execution environment to Java 7

Change-Id: Ic97db6dc4ed2a085aa52eff20121da091f9fe74c
Updated vendor information.

Change-Id: Ibaafbbe4ef4f4c7fd07a391001ee78b8433e5fd2
Move static methods from URIImpl to URIs.

Change-Id: Ifb7b1a0ba074c5ebbf8c6fb0f21541082cf9085f
Move role registrations to KommaModule.

Change-Id: I19a1985220c8bdc03d4f2eefc437a233a1c5cc52
Add constants for owl:topObjectProperty and owl:topDataProperty.

Change-Id: I29e3a06052f8215d7816fbf95abc4811001de5c9