This is the developer's directory. The distribution should *NOT*
be built in this directory -- instead files are copied to a staging
directory. See the Makefile for details.
Special tools (such as Cweb) are required. These tools are all free,
readily available, and highly portable. *But* these tools are not
included. It may not be easy or even possible to install all these
tools on some of the systems to which libmarpa, Marpa or Marpa::XS
can be ported.