Fix wording of new bison warning, per Peter.

configure

@@ -4107,10 +4107,10 @@ done
 if test "$YACC"; then
   if $YACC --version | sed q | $AWK '{ if ($4 < 1.875) exit 0; else exit 1;}'; then
     { echo "$as_me:$LINENO: WARNING:
-*** If you are going to modify the lexer files or build from CVS, the installed
+*** If you are going to modify the grammar files or build from CVS, the installed
 *** version of Bison is too old.  Bison version 1.875 or later is required." >&5
 echo "$as_me: WARNING:
-*** If you are going to modify the lexer files or build from CVS, the installed
+*** If you are going to modify the grammar files or build from CVS, the installed
 *** version of Bison is too old.  Bison version 1.875 or later is required." >&2;}
   fi
 fi

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.317 2004/03/02 20:08:52 momjian Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.318 2004/03/03 17:37:22 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -559,7 +559,7 @@ AC_CHECK_PROGS(YACC, ['bison -y'])
 if test "$YACC"; then
   if $YACC --version | sed q | $AWK '{ if ($4 < 1.875) exit 0; else exit 1;}'; then
     AC_MSG_WARN([
-*** If you are going to modify the lexer files or build from CVS, the installed
+*** If you are going to modify the grammar files or build from CVS, the installed
 *** version of Bison is too old.  Bison version 1.875 or later is required.])
   fi
 fi