Added tentative workaround for the bug (a script bug, I think) that causes
the game to hang when examining the lift at the top of the pyramid.
And, of course, some misc. cleanup.
svn-id: r11359
over the past few weeks, except for g_sword2. (Of course, this doesn't
necessarily make the code any prettier, but we can work on that later.)
svn-id: r11309