"Recent" minor changes (pack leaders, magic flags, broken doors)

Date:Sun Apr 9 09:46:34 2017
Pack leaders are no longer the power-charmie they used to be. (Force)


Magic character-flags now are magic-colored; e.g.,

  Elrond the Master of Rivendell is standing here (glowing).

now has "glowing" in magic color (or markup). (Dáin)


You now get more informative error messages when trying to use broken or
blocked doors. Thanks Orlanth for the idea. (Dáin)