[gtk] (2 commits) ...Merge branch 'msys2-ccache-setup-first' into 'master'

From: Christoph Reiter <creiter src gnome org>
To: commits-list gnome org
Cc:
Subject: [gtk] (2 commits) ...Merge branch 'msys2-ccache-setup-first' into 'master'
Date: Wed, 5 Aug 2020 22:05:27 +0000 (UTC)

Summary of changes:

  e77d82e... CI: move ccache setup before building anything
  d171835... Merge branch 'msys2-ccache-setup-first' into 'master'