A couple of pathing related bugs

[jdoran]

I ran into these last night, and haven't tracked them down. But FYI:

1) Line of sight errors

On the 3rd floor of Crescent Reach, target an NPC near the lift. Run
into an adjacent area well out of LOS. Checklos reports no LOS as
expected. Take one step to the side, we now have LOS. There is
a solid wall between myself and the NPC. (I looked at the wall in the
map/path viewer, and didn't see any gaps or corners).

I'm not looking forward to walking through Map::LineIntersectsZone, as
I will need to understand how the geometry is represented.

2) The "Pit O' Doom"

PathManager::NoHazardsAccurate is not detecting the elevator shaft
between CR's 2nd and 3rd floors. This should be interesting.