gplugin/gplugin

Prepare for the 0.34.1 release
v0.34.1
2021-09-25, Gary Kramlich
d01d2ae04291
Prepare for the 0.34.1 release

Testing Done:
Ran `ninja dist`

Reviewed at https://reviews.imfreedom.org/r/944/
Title: Perl5 Plugins
Slug: perl5
## Perl5 Plugins
> You **MUST** have the Perl5 loader plugin installed and working as well as
> the gobject-introspection package for GPlugin installed to use Perl5 plugins.
### Example Perl5 Plugin
Like all plugins in GPlugin, Perl5 plugins must also implement the
`gplugin_query`, `gplugin_load`, and `glugin_unload` functions.
The following is a basic Perl5 plugin.
```perl
use strict;
use Glib::Object::Introspection;
Glib::Object::Introspection->setup(basename => "GPlugin", version => "1.0", package=> "GPlugin");
sub gplugin_query {
return GPlugin::PluginInfo->new(
id => "gplugin/perl5-basic-plugin",
abi_version => 0x01020304,
name => "basic plugin",
authors => ("author1"),
category => "test",
version => "version",
license_id => "license",
summary => "summary",
website => "website",
description => "description",
);
}
sub gplugin_load {
return 0;
}
sub gplugin_unload {
return 0;
}
```