OpenNLP model for model 1.7.3+

[Russ, Daniel (NIH/CIT) [E]]

Hello,

    With the release of OpenNLP 1.7.3, the GISModel serialization will not be 
backwards compatible with the pre-1.7.3 format.  I am particularly concerned 
with the models on SourceForge, because I still use them.  They may not be the 
best models, but they work fairly well and are easily available.  I think we 
should reformat the old models in the new format, and place the new models on 
an OpenNLP branded website (e.g Sourceforge, github, apache website).

Daniel