Add /translationUnit argument to command-line argument /openFileTm to allow better integration with Xbench

Under Community Review

If a second argument called /translationUnit was added to the /openFileTm, it would be possible to open a Studio TM at a given translation unit.

This would allow third-party QA tools to open a memory at a offending segment.  For example, the segment currently open in Xbench could be opened in Studio using Edit Segment (Ctrl+S).

Under Community Review