[gtk] (3 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:

  caebd11... text: Add assertions around insertion cursor drawing
  6d5019a... more assertions
  60b18ed... textview: Fix an erroneous unref
  c6b17f6... window: Cosmetic cleanup
  cc2339f... getting desperate
  916021c... text: maybe we reset the cached layout too early
  3d20894... try to track down the offender

Commits added to the branch:

  0a19d7e... textview: Fix an erroneous unref
  1efa781... window: Cosmetic cleanup
  17a9b13... text: Be more careful with cached layouts