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.