freetdm: ftmod_zt - Fix references to ftdmtel that should be Zaptel/DAHDI (screwed up during OpenZAP -> FreeTDM renaming)

FS-3685 this was just a typo but once i fixed it, i realized this code is pretty messed up and might need to be redone, I cleaned it up the best i could for now but I did not write this feature so I am not to confident that it should be used in production

move the thing that passes proto_specific_hangup_cause to the core and prefix it with last_bridge_ and also log last_bridge_hangup_cauuse for good measure

FS-3664 found the place I was talking about in sofia_glue.c, update to latest and try setting t38_passthru=once

FS-3681 --resolve -- contact consulting@freeswitch.org for a support contract and get priority attention for bugfixes

add tod_tz_offset variable to set to the integer value of the tz offset or the tz-offset tag on a per-tag basis

Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

OK, libtool pulling in all depdencies doesn't work (*sigh*)
so add CORE_LIBS back to _LDADD and also add ODBC_LIB_FLAGS (conditionally).

Tested on Debian Squeeze (6.0.x) amd64 (libtool-2.2.6), where
everything seems to be falling apart easily.

There's still a lot of room for improvement, though. Bundled libs are making
this harder, as we don't have a sane way to get their dependency libs and
libtool drops them on the floor, even if they are in the .la-file's dependency
list (e.g. mod_spandsp using libtiff(.la), which needs libjpeg).

( reference: http://www.gnu.org/s/hello/manual/libtool/Inter_002dlibrary-dependencies.html ).

Let's see what i did break this time...
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

This reverts commit 31679e53.

libtool - now available in various flavours of broken

This reverts commit 13996ec6.

libtool - now available in various flavours of broken

Temporary fix, esl autotoolification is pending...
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>