Support for THREADED and BOOSTIO branches.
dmtcp: bump to 2.0 final

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Include optional support for boost serialization
Fix validation to work on mac again.

Do not use date, because that tends to fail when a job happens to span more
than a day, like it often happens on mac.
Merge pull request #221 from ktf/fix-validation-mic

- Support for THREADED and BOOSTIO branches.
- Include optional support for boost serialization.
- dmtcp: bump to 2.0 final
- Fix validation to work on mac again.