Force flex/bison output files to be current.

Author: bmomjian

configure

@@ -1,4 +1,11 @@
 #! /bin/sh
+
+# touch files to flex/bison not needed
+cat UPDATE | grep '^\./' | while read FILE
+do
+	touch "$FILE"
+done
+
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53 for PostgreSQL 7.4beta2.
 #