Non-PRI_NEW_SET_API logging callbacks were only available in libpri-1.0 and older,
which also lacks PRI_IO_FUNCS (required) and wouldn't work anyway.

Explicitly check for both PRI_* feature defines at configure time and reject libpri
versions that lack them.

Remove the non-PRI_NEW_SET_API logging callbacks in ftmod_libpri.c.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

Use the PRI_NEW_SET_API define provided by >=libpri-1.2 to distinguish
between old style and new style pri_set_error() and pri_set_message()
callback functions.

Improve message logging by using ftdm_log_chan() if per-span
data with a valid (d-)channel object is available.
NOTE: pri_get_userdata() returns NULL if pri is NULL.

This will reduce the horizontal space for libpri output a bit, but allows
us to see which span the message/error came from.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

gsmopen: make huawei 1550 work with SMS in text UCS2: if you give CSMP after CSCS will die, let's do the opposite, first csmp then cscs. Two days catching this one. Bah :/

Timer-based b-channel tx gating won't work anyway, so remove all those
"#if 0"-ed bits of cruft.

Also remove the mISDN-specific timerfd_create() check in configure.
Signed-off-by: Stefan Knoblich <stkn@openisdn.net>

add origination_nested_vars=true to allow vars within vars in originate strings e.g. [originate {origination_nested_vars=true,TEST=,var=,recur=W00t}user/1004 3000]  will end up as w00t

FS-4077 --resolve this is unrelated, we had to move the network list loader before the modules load because some people using static configs would have mod_sofia load before the acl were in place and it would prevent mod_sofia from doing proper nat detection.  This commit should fix it by loading acl both before and after module load