r19339: Merge my 4.0-unittest branch. This adds an API for more fine-grained

r19339: Merge my 4.0-unittest branch. This adds an API for more fine-grained
output in the testsuite rather than just True or False for a
set of tests.

The aim is to use this for:
 * known failure lists (run all tests and detect tests that
						started working or started failing). This
   would allow us to get rid of the RPC-SAMBA3-* tests
 * nicer torture output
 * simplification of the testsuite system
 * compatibility with other unit testing systems
 * easier usage of smbtorture (being able to run one test
						and automatically set up the environment for that)

This is still a work-in-progress; expect more updates over the next couple of
days.
(This used to be commit 0eb6097305776325c75081356309115f445a7218)