Paper size / font size configuration file.

This is separated so I can build A4 and US Letter sizes without having to
edit files.

Anyone who downloads the source package can also simply edit this file,
which is a lot shorter than the manual.cls file, and easier to find the
appropriate line.

Doc/texinputs/pypaper.sty

+%
+%  Change this to say a4paper instead of letterpaper if you want A4.  These
+%  are the latex defaults.
+%
+\newcommand{\py@paper}{letterpaper}
+\newcommand{\py@ptsize}{10pt}