Changed mod_spandsp so it tries to resolve timezone names like Asia/HongKong
to a POSIX timezone descriptor string, like other parts of FreeSwitch do.

Its them damn gremlins.

                   seems to be causing confusion and annoying users

OS X apparently doesn't support \W.

Thanks-to: Peter Olsson <peter.olsson@visionutveckling.se>

FS-4528 --resolve

Tell people where to go to get the repository for building the
freeswitch-sounds-* and freeswitch-music-* Debian packages, as well as
what to read when they get there.

After chasing down a few memory leaks that two of which were in the freeradius library, the result is more standardized memory cleanup.

Enhancements to trace logging, include threads and context ID.

Changed default opal_conf.xml to allow more than just G.711 uLaw and not to clutter log file with debug logs.

Added to opal_conf.xml item for "disable-transcoding".

Updated build/buildopal.sh to use correct ./configure items for PTLib, allow for something other than standard install directory for PTLib/OPAL and be able to easily bind to a specific release of PTLib/OPAL.

Adding functionality to mod_xml_radius. Now you can do conditional accounting. And you can pull values from the other leg, specify an alternate variable name in case the variable doesn't exist and you can have default values.