[glib] (5 commits) Non-fast-forward update to branch wip/otte/interface-types

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/interface-types' 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:

  d4b72f1... value: Allow automatic transforms to/from interfaces
  093718c... closure: Support generic marshals for interface returns
  b823bc5... gtype: Add g_type_interface_instantiable_prerequisite()
  8f466a6... gtype: Fix typo in API comment

Commits added to the branch:

  956aac5... Suggest braces around empty body in ‘if’ statements
  800d8c4... gtype: Fix typo in API comment
  944a232... gtype: Add g_type_interface_instantiable_prerequisite()
  d0d9a9c... closure: Support generic marshals for interface returns
  a492fd1... value: Allow automatic transforms to/from interfaces