[Gm2] latest cvs changes

[Gaius Mulley]

Hi,

here are the latest cvs changes which relate to gm2 environment
variables.

   * gm2/gm2.texi:  corrected GM2ROOT to GM2_ROOT.
   * gm2/gm2spec.c:  corrected GM2ROOT to GM2_ROOT and
     pass old PATH appended to the new PATH.

   * gm2/gm2spec.c:  introduced GM2_ROOT environment
     variable which can override the --prefix option
     given to configure.
   * gm2/gm2spec.c:  commented new functions.
   * gm2/gm2spec.c:  introduced GM2IPATH and GM2OPATH
     environment variables.
     * gm2/gm2.texi:  documented all new environment
     variables.

the documentation regarding this topic currently available is:

http://www.nongnu.org/gm2/gm2.html#SEC7

regards,
Gaius