Fix the MSDOS build as follows from revision 104280, 104289.

Fix the MSDOS build as follows from revision 104280, 104289.

 config.bat: Concatenate lisp.mk onto the end of src/Makefile.
 msdos/sed1v2.inp (make-docfile commands): Recognize only if the line
 begins with a TAB.  Use $(etc) rather than a literal "../etc".
 (`sed SED-COMMAND $(srcdir)/lisp.mk`): Edit to replace with "$(lisp).
 (@lisp_frag@): Edit out.
 msdos/sedlibmk.inp (GNULIB_GROUP_MEMBER, HAVE_GROUP_MEMBER): Edit to
 zero.
 src/callproc.c (Fcall_process) [MSDOS]: Fix arguments to
 report_file_error introduced by the change from 2011-05-07.