[gtk] (10 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/for-master' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  b90914b... docs: Add more details to the migration guide
  1f4b762... Send focus events always to the root
  bc9d037... gtk-demo: Ellipsize columns in the characters demo
  dcb205d... build: Require sysprof 3.38.0
  0948380... window: Be more careful when looking for focus

Commits added to the branch:

  1e4d3b6... testsuite/gtk/builder.c: Fix running on Visual Studio (*)
  4450f64... Merge branch 'fix.builder.msvc' into 'master' (*)
  cb98a73... gdkseat: Make gdk_seat_get_tools() public (*)
  cdd2a2a... Merge branch 'kjellahl/gdkseat' into 'master' (*)
  c835df5... docs: Add more details to the migration guide
  e7aa103... gtk-demo: Ellipsize columns in the characters demo
  eb64729... build: Require sysprof 3.38.0
  6a0704a... window: Be more careful when looking for focus
  115ed00... Send focus events to the root
  8fcd4ac... gtk-demo: Keep undisplayable resources out of view

(*) This commit already existed in another branch; no separate mail sent