issue #59 - include fields from supertypes in ModelBuilder
issue #60 - Support model generation from XML instance data in Eclipse
issue #61 - user lowercase names in packages for generated models
Closes #56. I can't tell true lags due to my own need for extra memory on my machine, but I'm guessing we might want some progress monitors in some key places, like at finish and after the project is selected (which triggers the load of the camel config).  Also, not sure if the full project-relative path works with the camel editor since I don't have those plugins.
Closes #45.  Also fixed a bug I missed in the fix to issue #56.