Added basic-tup example, currently failing.

The test is currently failing with "Files were modified".  I think this
might have something to do with tup's remounting the files in fuse...
Clean up tup's auxiliary files after test

This fixes the previous warning about files being modified;
the problem was actually that more files were being ~created.
ignore temp subdir
Add more (untested) cases
More untested examples
Merge pull request #4 from drewm1980/master

Add tup support to build-shootout