It's reasonable for someone to change one or more of these directory
permissions after installation.  We shouldn't touch more than we need
on upgrade.  Each directory needs to be owned by the freeswitch user,
but past that we can leave discretion to the system administrator.

This installs the timezone file such that configurations can reference
it rather than copying it.

Debian has packaged libpq version 9.4beta2.  We were parsing the minor
version as "4beta2" and then trying to treat it as a constant integer,
which obviously doesn't work.

There's not really a perfect way to handle versions like this, so
we'll just pretend it's 9.4.0.

Conflicts:
	src/mod/endpoints/mod_sofia/mod_sofia.c
	src/mod/endpoints/mod_sofia/sofia_presence.c

Merge branch 'v1.2.stable' of ssh://git.freeswitch.org/freeswitch into v1.2.stable

FS-6596 --resolve

This allows new settings, e.g. new mirrors, to propagate into the
chroot images.

There's really nothing to do but retry.

Sometimes while the debian repositories are updating there are
sporadic signature failures.  It's annoying to have these break the
build, and the only thing to do is to retry, so we'll retry here
automatically.  We were already retrying on the update operation that
can fail in a similar manner.

When -reincarnate-reexec is given we run execv to restart FS.  If
argv[0] isn't a full pathname then execv is going to fail.  While not
common for a FS system started by init, this is a common occurrence
when FS is started from the shell.

Now if execv fails, we'll try execvp.  If that fails too then we'll
fall back on the normal reincarnation behavior.

Previously what would happen in that case is god would descend from
the heavens and become mortal.  Leaving heaven absent, all hope for
reincarnation was lost.

(That is, we'd simply return from reincarnate_protect and the
supervisor process would become the new instance of FS, so the trick
would only work once.)

If you start freeswitch with -reincarnate or -reincarnate-reexec, FS
will restart automatically in the event of an unexpected exit.

Currently, you can cause FS to immediately call exit(0) with `fsctl
shutdown now`, or you can have it call abort() with `fsctl crash`.
Which are both nice, but if you have reincarnation engaged, you really
might want FS to call exit([non-zero]) so the great supervisor
immediately breathes life back into your system.

This is now available via `fsctl shutdown reincarnate now`.

What we momentarily called log-uuid-chars is now better called
log-uuid-length.  Setting log-uuid-length will specify a truncation
length for UUIDs displayed by setting log-uuid.

If log-uuid-short is set, or -S is passed to fs_cli, we only display
the first 8 hex digits of the UUID.  The log-uuid-chars option may
instead be set to specify some other truncation length for the UUID.

Prior to this commit, an expression such as:

  esl_true("true") ? 42 : 0

...would return 1 rather than 42.