e-wm: Add recipe for 0.18.2

* keep old 0.17.* around because new enlightenment is more picky on where it
  will run (compositor is now mandatory)
* 0.18.2 release:
  http://sourceforge.net/mailarchive/message.php?msg_id=31789335
* 0.18.3 release:
  http://sourceforge.net/mailarchive/message.php?msg_id=31895179



Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>