Backport of "gst-env: Use meson-uninstalled pkgconfig files if available" into 1.16
requested to merge nirbheek/gst-build:backport-158-gst-env-Use-meson-uninstalled-pkgconfig-files-to-1.16 into 1.16
This allows people to use the development environment for building projects when glib is built as a subproject.
Original MR: !158 (merged)
Edited by Nirbheek Chauhan