Update broken or inconsistent project and wiki urls * README, doc/interpreter/contrib.txi, etc/HACKING, etc/README.MacOS, etc/README.MinGW, etc/README.devel: Update urls to use the octave.org domain. * doc/faq/OctaveFAQ.texi, scripts/miscellaneous/info.m: Replace broken links to the manual and help mailing list. * doc/faq/OctaveFAQ.texi, etc/PROJECTS, etc/README.MacOS: Update wiki urls to short naming scheme. * doc/interpreter/contrib.txi, scripts/help/unimplemented.m: Make Octave-Forge project urls consistent. * src/version.h.in: Update url to contribution page.

#include <octave/oct.h>

DEFUN_DLD (globaldemo, args, , "Global demo.")
{
  int nargin = args.length ();
  octave_value retval;

  if (nargin != 1)
    print_usage ();
  else
    {
      std::string s = args(0).string_value ();
      if (! error_state)
        {
          octave_value tmp = get_global_value (s, true);
          if (tmp.is_defined ())
            retval = tmp;
          else
            retval = "Global variable not found";

          set_global_value ("a", 42.0);
        }
    }
  return retval;
}