First attempt at pathfinding using boost::graph
little improvement
AITravel now works correctly on exterior cells. As long as NPC don't try to leave cell, it's ok.
Somehow manages to get from one cell to another, but this looks wrong... And I don't know how morrowind do it, because aitravel is completly buggy
check if the NPC is close from a non loaded cell. If yes, AITravel is simply ended.
clean up + correct a bug
Merge branch 'next' of https://github.com/zinnschlag/openmw.git into AI
Merge branch 'next' into HEAD
Fix compile error & warnings
Merge pull request #3 from scrawl/AI

Ai
Merge branch 'AI' of git@github.com:gugus/openmw.git into AI
refactoring
more refactoring
Merge branch 'master' of https://github.com/zinnschlag/openmw.git into AI

Conflicts:
	apps/openmw/CMakeLists.txt
the sgn function is no longer in the global namespace
post master-merge fixes. Looks a little odd.
More bugfix, but I don't like this one.
Merge branch 'master' of https://github.com/zinnschlag/openmw.git into AI
actors are now updates every frame. This should not be the case, but this is a quickfix for AI.
bugfix