Previous we disabled some plugins that we want to keep around but can't port
yet by setting `build_by_default` to `false`. However, this isn't working on
many machines. I haven't figured out why, so instead lets just make their
meson.build files exit early.
Testing Done:
Ran the turtles on a machine that was still building these plugins.
Reviewed at https://reviews.imfreedom.org/r/3142/
# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
#
# Translators:
# Copyright (C) Artur Flinta <aflinta@at.kernel.pl>, 2004
# Copyright (C) Krzysztof Foltman <kfoltman@onet.pl>, 2003
# Copyright (C) Paweł Godlewski <pawel@endure.pl>, 2007
# Piotr Drąg <piotrdrag@gmail.com>, 2009
# Copyright (C) Piotr Makowski <pmakowski@aviary.pl>, 2008