Fix generated links to external classes

In the generated links here, the module that's being referenced isn't the module of the current class, it's the module of the referenced class.   This matters when the class being referenced isn't in the same module as the existing class— for instance in [ofNode](http://www.openframeworks.cc/documentation/3d/ofNode.html), the link to  http://www.openframeworks.cc/documentation/3d/ofQuaternion.html should actually be http://www.openframeworks.cc/documentation/math/ofQuaternion.html. 

The only way that I could come up with to figure this out was to pre-create a lookup table of class-to-module, and pull that data in.  If there's a better way, I'm all about it.

(Ignore the changes to ofPoint—they're all whitespace CRLF issues)