OAK-619 Lock-free MongoMK implementation
- Improve branch support
- Copied over some tests from previous MongoDB based MicroKernel implementation. Some tests are still marked ignored.
- Fixed NPE in Commit.createOrUpdateNode() (newestRev may be null)
- Disabled document splitting until it is fully implemented -> max size set to Integer.MAX_VALUE
- Fixed path issue with JSOP move and copy operation

git-svn-id: https://svn.apache.org/repos/asf/jackrabbit/oak/trunk@1461044 13f79535-47bb-0310-9956-ffa450edef68