rewriting t-sql support in exyus

[mca]

i finally bit the bullet and started a complete rewrite of the t-sql
support in exyus this weekend. i'd been dreading it for a while, but
knew it had to be done. so much has changed since i wrote the
SqlXmlResource class late last year. in fact, so much drift had
occurred since i last used the t-sql resource, i just marked is as //
not working! in order to keep folks from getting hurt.

anyway, the rewrite has been going very well. i've got GET/HEAD, POST,
and DELETE support done. still need to implement the full PUT (create/
update) w/ ETag support, tho. i've also run into a few new items
regarding redirection options for POST and DELETE. i've got a bit of
work to do to make sure the proper URI is composed for redirects for
POST, too. but, all in all, it's gone well and i a should have a new
release posted early this week. it's been a while since i had a
meaningful update and it will be nice to get some good stuff out
there.

once the t-sql support is updated and tested, i'm looking forward to
some new demo apps and articles covering how easy it is to publish
database-backed end-points with exyus.