[vala] (7 commits) Non-fast-forward update to branch wip/gee

[Rico Tzschichholz <ricotz src gnome org>]

The branch 'wip/gee' 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:

  3da14aa... Update internal gee from libgee 0.8.8+d531caa9
  18fcc82... Update internal gee from libgee 0.18.1
  63a1964... Update internal gee from libgee 0.19.91
  2955485... Move to .foreach methods where it does not impact readabili

Commits added to the branch:

  4f5213a... gdk-pixbuf-2.0: Use correct finish-func for Pixbuf.from_str (*)
  4913cff... codegen: Default to void-return for vfunc pointer cast of * (*)
  a1afb5a... Set libxml2 method accepting nullable (*)
  c89231e... Update internal gee from libgee 0.8.8+d531caa9
  02ac046... Update internal gee from libgee 0.18.1
  d4f3016... Update internal gee from libgee 0.19.91
  97171b7... Move to .foreach methods where it does not impact readabili

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