autoconf: build in NTDB.
I previously added -DDISABLE_NTDB to FLAGS, but lib/param/util.c
doesn't seem to be compiled with that flag, so it's really not a good
solution.
So instead, compile in ntdb for the autoconf build. This means:
1) Add -DHAVE_CCAN to cflags.
2) Remove pyntdb from autoconf objects (which is what tdb does)
3) Remove -DDISABLE_NTDB
4) Add ntdb utility objects
5) Link in ntdb everywhere we link in tdb.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Jeremy Allison <jra@samba.org>