[gtk+] (35 commits) ...Merge fix for bgo#463773 - Handle a NULL display in gtk_clipboard_get_for_display() so Flash won't h

[Federico Mena Quintero <federico src gnome org>]

Summary of changes:

  fbfea09... Updated zh_CN translation (*)
  ec0dd9f... Updated Catalan translation (*)
  db1e138... Updated British English translation (*)
  5535230... Updated Italian translation (*)
  c28fabe... Make GtkAssistant keep its padding when built with GtkBuild (*)
  11adc5a... Don't leak RequiresInfo when parsing GtkBuilder files (*)
  61af085... Point to better place for git documentation (*)
  39eb2c6... Updated Arabic translation (*)
  3c625fe... Remove a deprecated call to gtk_status_icon_set_tooltip (*)
  f1bb36c... Allow unsetting the icon title set with gdk_window_set_icon (*)
  b33db85... Updated Slovenian translation (*)
  28a6068... Updated Brazilian Portuguese translation. (*)
  f43a78a... Fix casting problem in gmodule code. (*)
  b0b636c... Updated Ukrainian translation (*)
  2266d16... Updated Hungarian translation (*)
  70d0129... Updated Kannada transltion (*)
  637252a... Avoid double browser windows from the about dialog. (*)
  098a5b0... Updated Spanish translation (*)
  01946b5... Updated Spanish translation (*)
  49e1700... Updated Czech translation (*)
  5325959... Update to explain the situation. (*)
  1fe0b8e... Warn if the adjustment has nonzero page size. (*)
  832be65... Fix whitespace (*)
  d183f44... Fix handling of GDK_NONE (*)
  0052490... Make GtkHandleBox work on multiple displays (*)
  339298b... Add diagnostics for XID collisions (*)
  9426ba2... Updated German translation. (*)
  556fb4d... Updated German translation. (*)
  e4d97d9... Updating Estonian translation (*)
  7cfda03... Updated Greek translation (*)
  2e9385e... Make gtk-update-icon-cache not fall over leftover temp file (*)
  5d8a4f7... Don't enforce property change events on the root window (*)
  52325cc... Avoid unintended side-effect in gdk_window_get_events (*)
  e2bce0d... bgo#463773 - Handle a NULL display in gtk_clipboard_get_for (*)
  4134c34... Merge fix for bgo#463773 - Handle a NULL display in gtk_cli

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