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

[Benjamin Otte <otte src gnome org>]

Summary of changes:

  4b0b610... build: Include GSK types in gtk_test_register_all_type() (*)
  109ec52... shortcut: Actions are objects (*)
  77f9efa... textbuffer: Remove unused properties (*)
  8fd1530... testsuite: Make defaultvalue test always get the property (*)
  eded945... tests: Fix for new tranfer behavior of constructors (*)
  f2284ff... rendernode: Rename all gsk_render_node_peek_*() functions (*)
  163c04c... snapshot: Add cleanup function to snapshot state (*)
  1c7daec... Merge branch 'wip/otte/for-master' into 'master'

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