I've added GNUPackage(config.package.Package), which is supposed to simplify writing configure modules for "GNU packages" (i.e., those that are installed using the "configure; make; make install" paradigm). NetCDF.py has been expanded a bit to allow for a download and derives from GNUPackage now. Bugs are likely, of course, so if anybody has any trouble configuring with NetCDF, let me know and I'll take care of it.
Thanks. Dmitry.
