[vala] (41 commits) Non-fast-forward update to branch wip/gtkgir

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/gtkgir' 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:

  f20a559... girparser: Avoid fatal handling of nameless unions
  289ce7f... gtk+-3.0: Switch to GIR

Commits added to the branch:

  55127b7... Mark the icon property of GtkModelButton as nullable. (*)
  d50a99e... gstreamer-1.0: remove experimental tag (*)
  526471e... gstreamer-0.10: mark as deprecated (*)
  a7e01d5... vapi: Update GIR-based bindings (*)
  d1873a3... gtk+-3.0: Update to 3.21.5+4cd8e6c5 (*)
  9a7b196... glib-2.0: Fix wrong return type of OptionContext.get_descri (*)
  ab1d119... sqlite3: Allow some values to be nullable (*)
  5601083... Release 0.33.1 (*)
  4129254... glib-2.0: Update to 2.49.7 (*)
  f23a748... vapi: Update GIR-based bindings (*)
  ee66513... glib-2.0: Fix SearchFunc argument order for {List,SList,Que (*)
  d62783f... gstreamer-player-1.0: Some binding fixes (*)
  529df83... gstreamer-player-1.0: Add metadata (*)
  8245db7... gdk-3.0: Window.create_similar_image_surface() returns Cair (*)
  c6dda6b... gstreamer-base-1.0: Fix PushSrc.create/alloc() binding (*)
  ebe2ae3... clutter-gst-2.0/3.0: Fix init_with_args() binding (*)
  ab887c3... gtk+-2.0/3.0: Make event nullable for CellRenderer.start_ed (*)
  958ceca... gobject-2.0: Make FlagsClass.values weak (*)
  e007570... codegen: Add C11 keywords (*)
  0bb64c2... vapigen: Install vapigen*.pc in multiarch compatible locati (*)
  3592f21... build: Some minor modernizations (*)
  2ee9d3f... vala: Don't force array-elements to be owned, unowned ones  (*)
  de38563... codegen: Distinguish between Enum and Flags for their to_st (*)
  0431459... D-Bus: Support DBus.timeout attribute for client methods (*)
  6da360b... vapi: Update gobject-introspection-1.0 and libsoup-2.4 (*)
  22dff9c... tests: Add test for nested conditional expression (*)
  8e4cdfd... valainterface: Don't allow 'type' properties (*)
  e627ee4... Revert "valainterface: Don't allow 'type' properties" (*)
  b24f85a... glib-2.0: Update Unicode symbols (*)
  a38fdd2... codegen: Add support for finish_vfunc_name in CCode (*)
  c4336c0... gio-2.0: Force finish_vfunc_name of Volume.mount() to "moun (*)
  33879ec... Check for assignment to constant (*)
  c87fb97... vapi: Add PolicyKit bindings, polkit-agent-1 and polkit-gob (*)
  c4f405b... vapi: Update GIR-based bindings (*)
  aca65c5... Release 0.34.0 (*)
  4094b05... glib-2.0: Allow null as argmument for string.escape() (*)
  57441df... Add support for the \v escape charactor (*)
  63fa61b... webkit2gtk: URI*.get_http_headers returns unowned Soup.Mess (*)
  5c9b22e... glib-2.0: Update Unicode symbols (*)
  942af7d... girparser: Avoid fatal handling of nameless unions
  f91c3c8... gtk+-3.0: Switch to GIR

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