OCTAVE_HOME support in octave_config_info

[michael . goffioul]

This patch adds support for OCTAVE_HOME substitution in octave_config_info.
 
Michael.
 
Index: src/defaults.cc
===================================================================
RCS file: /cvs/octave/src/defaults.cc,v
retrieving revision 1.62
diff -c -p -r1.62 defaults.cc
*** src/defaults.cc     27 Oct 2006 14:02:16 -0000      1.62
--- src/defaults.cc     22 Nov 2006 11:34:25 -0000
*************** std::string Vsite_defaults_file;
*** 99,105 ****
  // Name of the FFTW wisdom program.
  std::string Vfftw_wisdom_program;
  
! static std::string
  subst_octave_home (const std::string& s)
  {
    std::string retval;
--- 99,105 ----
  // Name of the FFTW wisdom program.
  std::string Vfftw_wisdom_program;
  
! std::string
  subst_octave_home (const std::string& s)
  {
    std::string retval;
Index:
src/defaults.h.in
===================================================================
RCS file: /cvs/octave/src/defaults.h.in,v
retrieving revision 1.40
diff -c -p -r1.40 defaults.h.in
*** src/defaults.h.in   27 Jul 2006 19:35:22 -0000      1.40
--- src/defaults.h.in   22 Nov 2006 11:34:25 -0000
*************** extern std::string Vsite_defaults_file;
*** 197,202 ****
--- 197,204 ----
  // Name of the FFTW wisdom program.
  extern std::string Vfftw_wisdom_program;
  
+ extern std::string subst_octave_home (const std::string& s);
+ 
  extern void install_defaults (void);
  
  extern void set_exec_path (const std::string& path = std::string ());
Index: src/toplev.cc
===================================================================
RCS file: /cvs/octave/src/toplev.cc,v
retrieving revision 1.190
diff -c -p -r1.190 toplev.cc
***
src/toplev.cc       28 Oct 2006 16:30:52 -0000      1.190
--- src/toplev.cc       22 Nov 2006 11:34:25 -0000
*************** specified option.\\n\\
*** 841,847 ****
          const char *key = conf_info[i++];
  
          if (key)
!           m.assign (key, octave_value (conf_info[i++]));
          else
            break;
        }
--- 841,847 ----
          const char *key = conf_info[i++];
  
          if (key)
!           m.ass!
 ign
(key, octave_value (subst_octave_home (conf_info[i++])));
          else
            break;
        }