Update the mozconfig files with the changes from the versions in
tor-browser.git. We are currently not using the mozconfig files from
tor-browser.git directly as we need to modify some of them.

In tor-browser-bundle.git this change was done as part of commit
cd4465477ac10d2b740d5a32505cdab5a197e405.

tor-browser-bundle.git commit: f279b94f424c1c7eeabaa0119ccfc8fea326bed6

tor-browser-bundle.git commit: b5beb33b57643ff83838337ded870511599d45f5

Starting with Firefox ESR52 Yasm < 1.2.0 is not sufficient anymore to
compile our browser part for Windows. Ubuntu Precise still ships with
such a version, though. We compile our own version until we get off of
Precise.

tor-browser-bundle.git commit: 910094fc33ae4e75e10fee754bec106e83e0eac5

Use org.torproject as the MOZ_DISTRIBUTION_ID.
This results in a bundle ID of org.torproject.torbrowser.

tor-browser-bundle.git commit: 50b6e6fff4a535044f9b506854535df757125267

tor-browser-bundle.git commit: 1942f7b2f6e5f82c64dcfeab82713604866cb26f

We use the new compiler Mozilla is using for Firefox 52 cross-builds as
well. clang now requires GCC 4.8.5 for compiling which is not available
in Debian Wheezy. We therefore build the macOS parts on Debian Jessie
now.

Doing changes corresponding to #10369.

Doing changes corresponding to #10369.

Doing the changes corresponding to #21753.

Only for linux-x86_64 for now, as it fails to build on linux-i686.

This change will cause all containers to be rebuilt.

Re-zipping the omni.ja files is not needed to make them reproductible,
however if we don't re-zip them, the files become corrupt when we
update them using 'zip' (we are doing that when we update the
000-tor-browser.js preference file to set the locale) and firefox will
silently fail to load some parts.

Doing the same as what we are currently doing in gitian, this flag is
now used only in the firefox build.

The value of the --enable-update-channel option was empty because of
this typo.

To be closer to what we currently have in gitian, use binutils 2.24.

We also change tho OS to Ubuntu 12.04 for Windows builds, except for the
tor-browser bundle step, where we are staying with 14.10. We are using
14.10 in the tor-browser step because the version of python-pefile we
use fails on Ubuntu 12.04. The reason for using a recent version of
python-pefile is that the older versions don't work on x86_64. And we
are using an x86_64 container because docker does not support i386
containers. The problem is not present in gitian where we are using an
i386 VM. An other possible solution could be to build a recent version
of python.

Use the same commit as we currently use in gitian.