qulogic/gplugin

Simplify meson pkgconfig generation.
develop
2020-05-10, Elliott Sales de Andrade
7f7006358a70
Simplify meson pkgconfig generation.

This silences warnings about calling it with the wrong type of argument.
usr/include/gplugin-1.0/gplugin-gtk
usr/include/gplugin-1.0/gplugin-gtk.h
debian/tmp/usr/lib/*/libgplugin-gtk.so
debian/tmp/usr/lib/*/pkgconfig/gplugin-gtk.pc
debian/tmp/usr/share/gir-1.0/GPluginGtk-1.0.gir
debian/tmp/usr/share/vala/vapi/gplugin-gtk.deps
debian/tmp/usr/share/vala/vapi/gplugin-gtk.vapi