MSVC compiler support [patch 6]: Default program definition

[Michael Goffioul]

Defines default programs (gnuplot and pager) correctly.

Index: aclocal.m4
===================================================================
RCS file: /cvs/octave/aclocal.m4,v
retrieving revision 1.97
diff -p -c -r1.97 aclocal.m4
*** aclocal.m4  17 Aug 2006 20:29:51 -0000      1.97
--- aclocal.m4  17 Oct 2006 11:07:41 -0000
*************** else
*** 464,469 ****
--- 464,472 ----
      *-*-cygwin*)
        octave_possible_pagers="$octave_possible_pagers more.com"
      ;;
+     *-*-msdos)
+       octave_possible_pagers=
+     ;;
    esac
  
    AC_CHECK_PROGS(DEFAULT_PAGER, $octave_possible_pagers, [])
*************** dnl Does gnuplot exist?  Is it a recent 
*** 478,484 ****
  dnl
  AC_DEFUN(OCTAVE_PROG_GNUPLOT, [
  case "$canonical_host_type" in
!   *-*-cygwin*|*-*-mingw32*)
      gp_names="pgnuplot pipe-gnuplot gnuplot"
      gp_default=pgnuplot
    ;;
--- 481,487 ----
  dnl
  AC_DEFUN(OCTAVE_PROG_GNUPLOT, [
  case "$canonical_host_type" in
!   *-*-cygwin*|*-*-mingw32*|*-*-msdos)
      gp_names="pgnuplot pipe-gnuplot gnuplot"
      gp_default=pgnuplot
    ;;