Jaxb code generation appears to be mostly functional.

I still get a warning regarding a target not being consumed; presumably I'm not making
some kind of library callback that I should be, but I'm not sure what at this time.

Custom package are also (probably) not working; I haven't tried them yet. Currently it
just uses the .xsd directory as the target package (by searching for 'com' in the file
path leading up to the schema, which is a hack).

The test case I made way back when is completely out of date, and will not work.

I modified pants.ini to add config stuff, but none of it is currently being used.

JaxbLibrary declares no dependencies, because I'm not exactly sure how to specify them. It just needs
xjc, which comes with the java jdk, so should already be installed for pretty much everyone.