[mutter] (18 commits) Non-fast-forward update to branch wip/carlosg/incr-is-fubar

[Carlos Garnacho <carlosg src gnome org>]

The branch 'wip/carlosg/incr-is-fubar' 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:

  cb0e084... x11: XMaxRequestSize returns 4-byte units
  6b24519... x11: Flag flushes despite having less than the element size
  32776f4... x11: Intern INCR atom
  f06653e... x11: Unset pending flush flag right before notifying on tas
  3dd74bb... x11: Ensure flush() Flushes all output stream data
  485ee3d... x11: Only send SelectionNotify on first INCR chunk
  6557864... x11: Wait till data is flushed before notifying on the pend
  560953d... x11: Finish INCR transfers properly
  3aa1c70... x11: Don't invariably queue a pending request
  3c72ab5... x11: Don't exceed transfer size in INCR chunks
  a9a49f4... x11: Fix iterative INCR property checks

Commits added to the branch:

  3e967d7... input-settings: fix device list iteration (*)
  645d596... cogl: Use autopointers to free structs on return (*)
  1d75d5a... group: Free group if returning early (*)
  506e065... test-utils: Only initialize client when we're returning it (*)
  d0ef660... clutter: fix memleak in test error path (*)
  60a2605... x11: XMaxRequestSize returns 4-byte units
  18d05b3... x11: Flag flushes despite having less than the element size
  84d0db0... x11: Intern INCR atom
  ffbd0b5... x11: Unset pending flush flag right before notifying on tas
  a12da2f... x11: Ensure flush() Flushes all output stream data
  e210ffc... x11: Only send SelectionNotify on first INCR chunk
  0ef3dab... x11: Wait till data is flushed before notifying on the pend
  856bebf... x11: Finish INCR transfers properly
  4f49036... x11: Don't invariably queue a pending delete request
  c56fb43... x11: Don't exceed transfer size in INCR chunks
  eadf125... x11: Fix iterative INCR property checks
  69b789a... x11: Don't stall on write_async()
  692f932... core: Cater for reading selection in chunks

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