Comment out unused variables

Comment out multiple variables that have been declared but not used (No
code changes)
	- multiple files, identified with comment > // 20131224 not used
    - see also  ## TODO ## as some code needs to be re-checked for
functionality
    >> build warnings reduced from 82 to 45
    - remaing warnings are mainly private field definitions that are
not used....
    …mainly in WhiteCoreOpenDynamicsEngine - AODEApi.cs &
AODEDynamics.cs  and the Physics.BulletSPlugin code (Opensim)
Refactor DataManagerTests

Refactor Aurora >> WhiteCore - Actual test do not appear to be
currently used