rombuilding fixes - stop exporting base.iby, and set the other bits to work with the kernel base.iby
BGEN -- Automatic Generation of Extension Modules
=================================================
This directory contains BGEN -- a package that helps in generating
complete source code for Python extension module. For examples of its
use, see the Mac Python source distribution (available separately
from the Python ftp archives). Note that BGEN is not Mac specific!
WARNING: bgen has been removed in 3.0.