pants goal idea work in progress.


Idea files are now actually generated and IntelliJ is opened. Codegen also appears to work now, after I moved some code out of ide_gen's __init__ and into its execute(), so that the code actuall gets generated before its called for. External jars work now. I've been testing it out on the jaxb examples and tests.

The code also currently has a mess of print statmements and commented out debugger invocations, as I've been trying to decipher how the old system worked and how the new system is supposed to work.
I'm not sure this change is going to work for everyone.  maybe turn it into a config file parameter?