make sure we link with the current build readline rather than
the system installed one

--- examples/rlfe/Makefile.in
+++ examples/rlfe/Makefile.in
@@ -22,7 +22,7 @@
 CFLAGS = @CFLAGS@
 CPPFLAGS = @CPPFLAGS@
 #LDFLAGS = -L$(READLINE_DIR)
-LDFLAGS = @LDFLAGS@
+LDFLAGS = @LDFLAGS@ -Lreadline
 LIBS = -lreadline -lhistory -lncurses @LIBS@
 
 CPP=@CPP@