Started to get samsync to insert account information in the passdb. It's

Started to get samsync to insert account information in the passdb.  It's
pretty half-arsed at the moment and doesn't work very well but Mr Bartlett
was interested in it.

Also started playing around with the more interesting bits of popt.  The
auto-generated usage information is pretty neat.
(This used to be commit b3e51bfe6c13f1d20e599f675332f0489d8462e7)