Initial version of fix for the MS-DOS build, not yet tested.

Initial version of fix for the MS-DOS build, not yet tested.

 config.bat: Configure in `lib'.
 msdos/sedlibmk.inp: New file.
 msdos/sedlibcf.inp: New file.
 msdos/sed1v2.inp (NS_OBJC_OBJ): Edit to empty.
 (@true): Edit to "@rem".
 (move-if-change): Edit to "update".
 (echo): Edit to "djecho".
 (cd $(lib) && ...): Edit to "$(MAKE) -C ...".
 msdos/mainmake.v2 (version): Remove, no longer needed (config.in
 defines VERSION).
 (all): Add lib.
 (lib): New target and recipe.
 (lib-src): Depend on lib.
 (src): Depend on lib and lib-src.
 (clean, mostlyclean, distclean, maintainer-clean, extraclean)
 (bootstrap-clean): Recurse into lib.
 msdos/sed2v2.inp: Remove workaround for the "#if ! HAVE_MKTIME ||
 BROKEN_MKTIME" stuff -- it's no longer in src/config.in.
 (HAVE_ATTRIBUTE_ALIGNED, HAVE_C99_STRTOLD, HAVE_DECL_GETENV)
 (HAVE__BOOL): Edit to 1.
 (VERSION, inline, restrict): Edit for DJGPP.
 src/s/msdos.h (strtold): Define to _strtold.
 admin/admin.el (set-version): Add msdos/sed2v2.inp.