test for md5

now check that md5 is available; if not skip verification.
added test for md5sum

this is used on linux systems.
added md5sum option to all fetch data scripts
switched load order of libraries

moved -lsuperfluid later.
switched load order of superfluid in all dirs

-lsuperfluid now after -ldStar_eos everywhere.
changed pointer to dStar in NScool
redid test for NScool

Because of adaptive steping, both in making grid and time integration,
this just test that it runs correctly.  We need to do a test_suite to
really test things.
Merge branch 'development'