Adapt the MS-DOS build to lib/stdio.h and autogen/.

 config.bat: Generate src/config.h and lib/Makefile from
 autogen/config.in and autogen/Makefile.in.
 msdos/sedlibmk.inp: Adapt to addition of the gnulib stdio module.
 Add a description of what needs to be done when a new gnulib
 module is added.
 (MKDIR_P): Fix replacement command.

diff --cc msdos/ChangeLog
index 1891d79,f821558..4a2534e
--- 1/msdos/ChangeLog
--- 2/msdos/ChangeLog
+++ b/msdos/ChangeLog
@@@ -1,3 -1,13 +1,10 @@@
 -      (GNULIB_PRINTF, GNULIB_PRINTF_POSIX): Add missing variables.
+ 2011-03-25  Eli Zaretskii  <eliz@gnu.org>
+ 
+       * sedlibmk.inp: Adapt to addition of the gnulib stdio module.
+       Add a description of what needs to be done when a new gnulib
+       module is added.
 -      (NEXT_AS_FIRST_DIRECTIVE_STDIO_H, NEXT_STDIO_H): Edit to
 -      "<stdio.h>", as lib/stdio.h cannot be left unused.
+       (MKDIR_P): Fix replacement command.
+ 
  2011-02-26  Eli Zaretskii  <eliz@gnu.org>
  
        * sedlibmk.inp (BITSIZEOF_PTRDIFF_T, BITSIZEOF_SIG_ATOMIC_T)