[infinispan-dev] First working version of lock/unlock API

Hey Manik, Do not need Mircea's help. I turned on debugger and went to investigate why I was getting NPEs in those invocations. So now I have first working version of locking/unlocking working with transactions (see SyncReplLockingTest). Will add more tests and continue to play with this one. All in all - loads of fun. As soon as I am done with this one and implicit transactions I want more tasks :) Regards, Vladimir