Major Updates to mrVista and the testing code

This release includes a major update to mrVista and should be release in lock-step with pull request #39 on vistalab/vistasoft.

Changes include:

- Addition of a test for transformations between inplane and gray views
- Addition of a test for averaging tSeries data
- Addition of a test clean up script, reverting the svn repo and deleting all files that have been changed or added (warning: this will cause all files temporarily stored there to be deleted, not just the files changed by mrvTest.)