[mutter/wayland] (9 commits) ...Add meta_activate_session

[Jasper St. Pierre <jstpierre src gnome org>]

Summary of changes:

  fb3df52... main: Add a --display-server option (*)
  757b626... wayland: Add a few comments, rename some strings (*)
  b11c75c... weston-launch: Rearrange code slightly (*)
  1bb9f1e... weston-launch: Remove unused prototypes (*)
  81025e3... weston-launch: Stat the path before opening it (*)
  7314cda... weston-launch: Always use sd_session_get_vt (*)
  394af33... weston-launch: Allow activating our own VT by passing a neg (*)
  f21312e... meta-weston-launch: Redraw and update the cursor when switc (*)
  d47b7ba... Add meta_activate_session (*)

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