expose the C API subsection which was hidden from LaTeX in a comment. In

expose the C API subsection which was hidden from LaTeX in a comment.  In
the info conversion the \comment LaTeX macro mapped to a Texinfo @ignore
macro.  Unfortunately, py2texi.el is not smart enough to avoid generating
links to the @ignore'd section, which causes makeinfo to croak.

Exposing this text is probably not the most correct thing to do, as this
documentation really belongs in the C API manual.  This does get the info
files generated, however, which is a more practical goal considering the
impending release of 2.3rc1.