[NEW PORT] devel/pyxb: Python XML schema bindings

PyXB is a pure Python package that generates Python code for classes that
correspond to data structures defined by XMLSchema. In concept it is similar
to JAXB for Java and CodeSynthesis XSD for C++.

WWW: http://pyxb.sourceforge.net

PR: 219908
Submitted by: Jov <amutu amutu com>