Revamp #524 (actually, just cherry-pick the Autotools part on top of HEAD)
Closes #524. You can view, comment on, or merge this pull request online at:
https://github.com/geany/geany/pull/1182
-- Commit Summary --
* autotools: Detect GTK version to use automatically
-- File Changes --
M configure.ac (29)
-- Patch Links --
https://github.com/geany/geany/pull/1182.patch https://github.com/geany/geany/pull/1182.diff