Moving towards a more rational set of files
If ROOTSYS isn't defined, try to get ahead of what we are going to do.
Added some debugging code
Add back in the test for an empty rootsys
Updates to how we do the readme instructions
First go at something to update the user settings
Work on an already existing, empty file.
Add a new setting to a list that was there previously.
Make sure we can overwrite an existing value