MSVC compiler support [patch 2]: Linking against MCVSRT.DLL

[John W. Eaton]

On 17-Oct-2006, Michael Goffioul wrote:

| Link everything with CRT DLL: required if using errno or C file 
| descriptor across
| DLL boundary
| 
| Index: configure.in
| ===================================================================
| RCS file: /cvs/octave/configure.in,v
| retrieving revision 1.526
| diff -p -c -r1.526 configure.in
| *** configure.in      13 Oct 2006 18:11:26 -0000      1.526
| --- configure.in      17 Oct 2006 11:07:41 -0000
| *************** AC_SUBST(DEPEND_EXTRA_SED_PATTERN)
| *** 271,276 ****
| --- 285,294 ----
|   
|   ieee_fp_flag=
|   case "$canonical_host_type" in
| +   *-*-msdos)
| +     CXXFLAGS="$CXXFLAGS -EHs -MD"
| +     CFLAGS="$CFLAGS -MD"
| +   ;;
|     i[[3456789]]86-*-*)
|       if test "$GCC" = yes; then
|         OCTAVE_CC_FLAG(-mieee-fp, [
| *************** elif $have_f2c; then
| *** 684,689 ****
| --- 702,712 ----
|       CONFLIB_ARG="-L. -lconflib"
|     fi
|     rm -f conftest*
| +   case "$canonical_host_type" in
| +     *-*-msdos)
| +       CONFLIB_ARG="-MD"
| +       ;;
| +   esac
|     AC_CHECK_LIB(f2c, f_open, FLIBS=-lf2c, FLIBS=, $CONFLIB_ARG)
|     rm -f $oct_conflib

It seems bad to set compiler options based on the OS.  I see that
config.guess can generate msdosdjgpp, so maybe should be using
msdosmsvc?

I applied this patch, but changed msdos to msdosmsvc.

jwe