Backport of "meson: Actually build gstgl without implicit include dirs" into 1.18
requested to merge tpm/gst-plugins-base:backport-mr-810-into-1.18-fix-gstgl-uwp-build-typo into 1.18
Backport of !810 (merged) "meson: Actually build gstgl without implicit include dirs".
Commits:
- e77bea49 meson: Actually build gstgl without implicit include dirs