Uploaded new mdtest patterns. Make them invariant to line nrs.
Added md-workbench tests.
Added --oversubscribe option if MPI understands it (needed for some systems)
- travis now tests the packaged source to detect missing source/headers
- basic tests are less sensitive to the directory from where they are run
- fixed some missing files from the `make dist` manifest
- updated the format of NEWS to work with `make dist`