[gdm] (2 commits) Non-fast-forward update to branch wip/nielsdg/g-param-static-strings

[Ray Strode <halfline src gnome org>]

The branch 'wip/nielsdg/g-param-static-strings' 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:

  75bc84f... Use G_PARAM_STATIC_STRIGS on properties

Commits added to the branch:

  c98ea6a... libgdm: filter out sessions with duplicate names (*)
  525333a... Use G_PARAM_STATIC_STRIGS on properties

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