[gnome-shell/datetime] (15 commits) ...Merge branch 'master' into datetime

[David Zeuthen <davidz src gnome org>]

Summary of changes:

  7bc77a2... build: Add libnotify to module set (*)
  aa91491... StTooltip: Rework to use StLabel (*)
  c224e01... telepathyClient: add a missing "new" (*)
  0c5d87d... PopupMenu: allow insertion of items at any point (*)
  21ac225... StIcon: add support for GIcon (*)
  8b3f05b... Status area: introduce battery & power indicator (*)
  5f1a2e3... gnome-shell-build-setup.sh: add more deps for gnome-keyring (*)
  deb7e73... power-status: Remove tooltip (*)
  fa44289... [PowerIcon] Fix percent label to be in sync with the descri (*)
  909f2e6... ShellTrayManager: fix icon actor memory management (*)
  55f290b... Disable clearing the color buffer (*)
  e5a802b... Use the new "background actor" functionality in Mutter (*)
  1c8955b... shell-util: Add helper to hide actors from pick (*)
  be6e189... dnd: Hide drag actor from pick (*)
  b7fe72e... Merge branch 'master' into datetime

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