\productioncont: Replace leading spaces with   so that it's

\productioncont:  Replace leading spaces with   so that it's
    possible to control the indentation of continuation lines.

cfuncline_helper():  Only mark the argument names are <var>, not the
    whole argument list.  This leaves the argument types in the same
    font as the return type.  Based on a casual suggestion from
    Guido.