FS-5821 --resolve

We shouldn't be using pg_config to get build options for FS from
libpq.  pg_config just tells us what was used to build postgresql, not
what we should use.

See:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=725007

Make this optional for now until we're comfortable it works
everywhere.

FS-5821 --resolve

FS-5892 --resolve

This package bundles all modules and extras into a single DEB.  This
can have some advantages in terms of convenience and speed of apt
operations.

mod_rayo: allow unjoin of call without specifying call-uri, fix unjoin of call on hold so that b-leg is not hung up, allow unjoin command to b-leg

Applied patch from:
http://people.apache.org/~rjung/patches/expat-libtool2.patch

The failure that results from this seems to occur
non-deterministically.

FS-3185 --resolve