Updated documentation with progress.

The TODO has been updated with more check boxes, and the carto README
has been updated with completed items.
Moved test files to region-specific location.

There will be other tests eventually, and those tests will have data
files in their own directories.
Fixed incorrect progress variable.

Forgot to set things back to DummyProgress.  Better now.
Added support for extreme hills!

Making slow progress!
Minor changes in debug and filenames.

Nothing big here.
Modified test routines to use new directory structure.

Eventually there will be something better, but this is good for now.