[Differential] [Accepted] D4596: Figure out the GTK version instead of using a hardcoded one

[Harald Sitter]

sitter accepted this revision.
sitter added a reviewer: sitter.
This revision is now accepted and ready to land.

REPOSITORY
  R98 Breeze for Gtk

BRANCH
  Plasma/5.9

REVISION DETAIL
  https://phabricator.kde.org/D4596

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: garg, sitter
Cc: lbeltrame, apol, sitter, plasma-devel, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas