Subunit

Samba 4 is slowly starting to use more and more Subunit.

At the moment the main testrunner and a lot of the testsuites will output subunit. There are a still things I would still like to achieve:

• Ability to run single tests (--idlist) in selftest
• Ability to run single tests (--idlist) in smbtorture
• Subunit formatting compatible with the main Subunit protocol
• Switching over to the main subunit protocol parsers