[Gm2] latest cvs changes

[Gaius Mulley]

Hi,

here are the latest changes entered into the CVS.  Included is a bug fix
to the driver (include path) was being incorrectly constructed:

   * gm2/gm2spec.c:  ensure that the prev
     value is reset before each include path is added.
   * gm2/examples/gravity/Makefile.in:  changed python version
     and fixed exec prefix.

   * gm2/gm2.texi:  changed node About to Overview.
   * gm2/www/tools/texi2tr/src:  added function index.

   * gm2/gm2.texi:  many bug fixes to nodes.
   * gm2/www/tools/texi2tr:  added html, png subdirs.
   * gm2/www/tools/texi2tr/src:  many bug fixes applied.

   * gm2/gm2.texi:  incorporated the contents of the
     web page gm2/www/index.ms into gm2.texi.

regards,
Gaius