gplugin/gplugin

Re-arrange Perl include lines.
develop
2020-02-29, Elliott Sales de Andrade
757e8645d9e0
Re-arrange Perl include lines.

The `gperl` header is only needed in the loader, so take it out of the plugin.
Then remove a duplicate include in the source/header.
syntax: glob
.*.swp
*.debhelper
*.orig
*.pyc
*.ui~
\#*.ui\#
syntax: regexp
^build.*\/
^packaging\/debian\/tmp\/
^packaging\/debian\/(.+\.)?(substvars|debhelper\.log)$
^packaging\/debian\/build.*\/
^packaging\/debian\/libgplugin0?(-.+)?\/
^packaging\/debian\/gir1.2-gplugin-0.0\/
^packaging\/debian\/files$
^po\/.*\.pot$
^obj-x86_64-linux-gnu\/
^debian\/?$