MSVC patch: "cd" to root dir

[Michael Goffioul]

This patch solves a problem under Win32: you can't "cd" to root dir. Indeed,
you need a final backslash for the function "chdir" to succeed.

Michael.

Index: liboctave/lo-sysdep.cc
===================================================================
RCS file: /cvs/octave/liboctave/lo-sysdep.cc,v
retrieving revision 1.11
diff -c -r1.11 lo-sysdep.cc
*** liboctave/lo-sysdep.cc      6 Dec 2006 20:23:18 -0000       1.11
--- liboctave/lo-sysdep.cc      14 Jan 2007 12:13:11 -0000
***************
*** 89,94 ****
--- 89,98 ----

   return retval;
 #else
+ #if defined (__WIN32__)
+   if (path.length() == 2 && path[1] == ':')
+     path += "\\";
+ #endif
   return chdir (path.c_str ());
 #endif
 }