[glib] (3 commits) Non-fast-forward update to branch gobject-speedup11

[Matthias Clasen <matthiasc src gnome org>]

The branch 'gobject-speedup11' 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:

  b99bb30... Keep a separate flag for notify handlers
  a0537e3... Avoid property notification during object construction
  6d6e231... Avoid property notification during g_object_set

Commits added to the branch:

  8b328f1... Keep a separate flag for notify handlers
  8851112... Avoid property notification during object construction
  f755f44... Avoid property notification during g_object_set