Refactored and commented RRCTask.java.

In particular:
  - Some stuff had been removed, I guess for debugging, I don't remember why.  The code is now
    up to date.  I still need to test that everything still works correctly, but the changes
    are fairly minor.
  - Commented everything, refactored names to be consistent with the naming convention in other
    files.
  - removed baseline measurements: these are now redundant.
  - I'm now calling the "extra" tests "upper layer" tests.
Merge branch 'master' of github.com:teamwork523/MobiPerf