[gthumb] (20 commits) ...updated the required gtk+ and glib versions

[Paolo Bacchilega <paobac src gnome org>]

Summary of changes:

  7d34606... make the libunique dependency optional
  f42f278... Replacing an include for <gdkconfig.h> by a <gdk/gdk.h>
  5ab4712... Updating the gdk_drag_* stuff in gth-browser.c
  656a52f... There's no depth param in the gdk_window_get_geometry funct
  f85d383... Replace GDK_<keyname> with GDK_KEY_<keyname> through the co
  fbe716a... Stripping unused code from gedit-message-area
  7407e3b... Removing all references of the `gtk_dialog_set_has_separato
  be3370b... Revert "There's no depth param in the gdk_window_get_geomet
  0854726... Project wide replace GtkComboBox by GtkComboBoxText when ne
  9e2d292... Replacing gtk_combo_box text API by gtk_combo_box_text one
  739ec29... Replacing the deprecated gdk_set_sm_client_id call by a gdk
  277b701... check for libbrasero 2 instead of 3
  c549360... removed use of gdk_drawable_get_size
  90575fb... removed use of deprecated gtk_combo_box API
  c89a785... do not access suggested_action directly
  a46bdfa... removed calls to gtk_about_dialog_set_url_hook and gtk_abou
  cab896c... do not acces the evet_window attribute directly
  bab5929... fixed some errors when linunque is not used
  bd00353... Merge branch 'gtk-2-24'
  fa928ba... updated the required gtk+ and glib versions