gplugin/gplugin

Fix a few of our failing ci issues

2020-09-22, Gary Kramlich
0f07cacab39d
Fix a few of our failing ci issues

g_queue_clear_full was added in 2.60 but we only require 2.40

clang-format some files that were missing it.

Clean up the paths variable from command line parsing

Fix some leaks that the signal test caused and found

Testing Done:
Ran the valgrind convey plan. It still fails, mostly related to https://issues.imfreedom.org/issue/GPLUGIN-117.

Reviewed at https://reviews.imfreedom.org/r/130/
# Dependencies
GPlugin depends on the following at a bare minimum:
* glib-2.0 >= 2.40.0
* gobject-introspection, libgirepository1.0-dev
* meson >= 0.42.0
* gettext
* help2man
* a C compiler
A full build (enabled by default) depends on the following:
* gtk-3
* python3-dev, python-gi-dev, python3-gi
* libperl-dev, libglib-perl, libglib-object-introspection-perl
* liblua5.1-0-dev, lua-lgi
* valac
All of these packages and their development headers need to be installed
prior to building GPlugin.
# Building
GPlugin uses [meson](https://mesonbuild.com/) as its build system. As such
compiling is a little bit different than your typical `./configure`, `make`,
`sudo make install`.
Meson requires you to build in a separate directory than your source. As such,
these instructions use a separate build directory.
To compile you need to run the following commands:
```
meson build
cd build
ninja install
```
If you want/need to tweak the build system (to enable/disable certain loaders)
you can do so at any time by using `meson configure` in the build directory.