Change lock_frame() -> read_lock_frame() for clarity.
Vanquish all references to MRTask2.  Removing from comments removes from javadoc.
Rename ParseDataset2 -> ParseDataset
Various comment cleanups.
Rename InspectDataOut -> SVMLightInspectDataOut
Rename InspectDataOut -> SVMLightInspectDataOut
Merge branch 'brandon-cleanup'

* brandon-cleanup:
  Rename InspectDataOut -> SVMLightInspectDataOut
  Rename InspectDataOut -> SVMLightInspectDataOut
  Various comment cleanups.
  Rename ParseDataset2 -> ParseDataset
  Vanquish all references to MRTask2.  Removing from comments removes from javadoc.
  Change lock_frame() -> read_lock_frame() for clarity.

Conflicts:
	h2o-core/src/main/java/water/api/ParseHandler.java