Added alchemy bomb gem stats to the tooltips for base gems if the player knows...

Added alchemy bomb gem stats to the tooltips for base gems if the player knows the create alchemy gems talent
Added a new function to engine.Map to more accurately compute a compass direction (north, southeast, etc) from coordinate differences and updated the slightly misleading escort emotes to use it.


git-svn-id: http://svn.net-core.org/repos/t-engine4@6088 51575b47-30f0-44d4-a5cc-537603b46e54