Enhance fitting.  Refs #6017.
Add RefinePowderInstrumentParameters2.  Refs #6018.
Replace version 1.0 by 2.0.  Refs #6017.

Replace FitPowderDiffPeaks version 1.0 by version 2.0.
Take the unit test for version 1.0 out of unit test as it is out dated.
Take RefinePowderInstrumentParameters out of unit test.  Refs #6018.
Add simulated annealing.  Refs #6018."

Add simulated annealing algorithm to algorithm.
Make it version 2 to replace previous version 1.
Fix the version issue.  Refs #6018.
Add unit tests.  Refs #6018.