avoid creating include as file

[DJ Delorie]

It happened to me that the Makefile didn't create the include
directory before running the step that fills it (not sure if it was my
fault or gcc's).  The first "cp $$file include" created a *file*
called include.  With this proposed change, it will still fail in
those rare cases, but at least it will be more easily recoverable and
will fail in a more sane way, in that it will report "include/.: no
such directory" instead of, on the next pass, "include/stdarg.h: not a
directory"

2000-03-15  DJ Delorie  <dj@delorie.com>

	* Makefile.in: Make sure "include" isn't accidentally created
	as a file.

Index: Makefile.in
===================================================================
RCS file: /cvs/gcc/egcs/gcc/Makefile.in,v
retrieving revision 1.402
diff -c -3 -p -r1.402 Makefile.in
*** Makefile.in 2000/03/14 18:36:17     1.402
--- Makefile.in 2000/03/15 20:39:35
*************** stmp-int-hdrs: $(STMP_FIXINC) $(USER_H) 
*** 2152,2158 ****
            realfile=`echo $$file | sed -e 's|.*/\([^/]*\)$$|\1|'`; \
            touch include/$$realfile; \
            rm -f include/$$realfile; \
!           cp $$file include; \
            chmod a+r include/$$realfile; \
          fi; \
        done
--- 2152,2158 ----
            realfile=`echo $$file | sed -e 's|.*/\([^/]*\)$$|\1|'`; \
            touch include/$$realfile; \
            rm -f include/$$realfile; \
!           cp $$file include/.; \
            chmod a+r include/$$realfile; \
          fi; \
        done