Log Message:
Finish jabberd package doing the following things:

    o Use BUILDLINK_TRANSFORM to fix path for db4 headers.
    o Fix typos of previous commit.
    o Add rc.d scripts for all jabberd services (c2s, router, etc).
    o Minor cleanups to Makefile.
    o Remove pidfiles via stop_postcmd.

I think it's ready for pkgsrc, I'll import it after the freeze.