ICU for dwtx

[Frank Benoit]

The original ui.forms do use the lib ICU for boundary analysis
http://www.icu-project.org/userguide/boundaryAnalysis.html
This is to make the decision where to break long text into lines.

My first thought was to do a most simple implementation and omit the 
dependency. But it seems to me, the implementation is not easy.

So the best way seems to me, go the way the original eclipse designers 
choose. Use ICU.
Thought?