gplugin/gplugin

Fix the build when ran in a meson subproject.
feature/meson-subproject-fix
2019-08-12, Gary Kramlich
923cbd2a8055
Fix the build when ran in a meson subproject.

We were using meson.build_root() when we should have been using
meson.current_build_dir().
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\/?$