Avoid ignoring files actually in our tree, and ignore some generated
files that were not being ignored previously.

This file is specifically ignored by our .gitignore.  Brian added this
ignore on 2013-06-06 but neglected to remove the file.  I've now
bulid-tested without the file to be sure that it is indeed generated
correctly and so can be removed safely.

freeswitch.serial is used by ZRTP as a ZID, so it should not be shared
between systems and definitely should not be distributed as a default
value by us.

Note that we don't actually support building mod_spidermonkey for
Debian at the moment.

FS-4552

Note that we don't actually support building mod_managed at this time
for Debian.

FS-5317 --resolve

Thanks-to: Artur Kraev <ravenox@gmail.com>

This only works on Linux.

If we receive SIGTERM or SIGILL we should propagate the signal to the
child FS process.  As FS normally handles these signals, we need to
restore the handler before we refork.

FS may also add a handler for SIGCHLD; we need the default action
here instead for the parent.

When FS is given the -reincarnate flag, FS will be automatically
restarted after any uncontrolled exit.

We were previously clearing a pointer's worth of memory rather than
clearing a full element.

This also fixes the build as gcc-4.8 catches this error.

FS-5572 --resolve set new variable by doing export bypass_keep_codec=true to force re-invite with the same codec it was using previously

adding transfer-sound to ivr menu so you can specifiy a sound file to pay when a transfer takes place

Merge remote-tracking branch 'moy/blind-transfer-response'

This document is intended to get new people started with how to create
and submit source code patches to us.  It attempts to demonstrate our
workflow as well as some best practices.

FS-5634 --resolve this patch should fix it but comment it out instead in the old version to get the same effect

You can't prefix this one with MWI as it ends up in the body of the MWI notify causing some devices to have a heart attack

mod_valet_parking: add valet_lot_extension chan var - stores the current park location of the channel