* Detect and use CM files for smlnj
* Split into two checkers
- one for CM projects
- one for single SML files
* Fix some typos
* Fix error caught by writing tests
We want to actually use `glob` to search in paths upwards from us.
(Previously we were just searching in the current directory every time!)
* Fix errors from former test run
* Write tests for GetCmFile and GetExecutableSmlnj
* Typo in 'smlnj/' fixture filenames
