libdeng2|Windows: Export Binder, NativeFunctionSpec
BspNode|World: Added BspNode method for calculating the height of a subtree
Thinkers|World: Added Thinkers utility method for counting active thinkers
Console: Improved output of 'inspectmap'

Now includes more pertinent map information, such as the full title
(which is presently obtained by querying a game registered cvar...)
and its URI, plus a summary of current objects (in addition to the
current elements).
Merge branch 'master' of github.com:skyjake/Doomsday-Engine