wip/py-RXP 2.1.0 NetBSD

RXP is a very fast validating XML parser written by Richard Tobin of the University of Edinburgh. It complies fully with the W3C test suites (although we have compiled it without Unicode support for the time being). We would like to thank Richard Tobin and Henry Thompson of the Language Technology Group for making this code available to the world.

pyRXP is a wrapper around this which constructs a lightweight in-memory "tuple tree" in a single call. This structure is the lightest one we could define in Python, and it is constructed entirely in C code, resulting in unprecedented speed. It is a core part of ReportLab's forthcoming XML toolkit, which aims to offer simple, fast and pythonic tools for common XML processing tasks.