[gtk] (8 commits) ...Merge branch 'matthiasc/for-master' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  8a1a96a... text: Fix placing the cursor on click (*)
  7233a70... reftest: get backtraces (*)
  ff53d5b... stylecontext: Respect cursor aspect ratio everywhere (*)
  754d6d1... wayland: Avoid criticals when unsetting transient parents (*)
  0a19d7e... textview: Fix an erroneous unref (*)
  1efa781... window: Cosmetic cleanup (*)
  17a9b13... text: Be more careful with cached layouts (*)
  88aa548... Merge branch 'matthiasc/for-master' into 'master'

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