Add a "patrolling" flag to monster creation in mapdef and dungeon.cc,

and add it to Orb Guardians in Zot:5. At least in theory, they should now be returning to their starting points if you flee and stay away for long enough.

"In theory" because the bad monster pathfinding prevents them from actually finding their way back. We've got the same problem with minotaurs in labyrinths, who've also got this flag set. Because of these restrictions it's almost impossible to test whether it would work without such problems. In any case, it's there for later.

Also: spacing and commenting fixes in dungeon.cc.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5253 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on May 26, 2008
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