got JTS works in GWT

JTS is a powerful tools  by Martin Davis.  I am so impressed by the brilliant design, solid implementation and  so many fantastic features. So I decided to use JTS as the foundation of vector function in SMap.

First I need to make it work in GWT. because Gwt doesn't support all java classes and functions, so some work has to be done.

So far so good, and here is the progress.