http://bugs.gentoo.org/267613

add missing dep

patch by Peter Alfredsen

--- bash-4.0/Makefile.in
+++ bash-4.0/Makefile.in
@@ -1022,10 +1022,11 @@
 subst.o: flags.h jobs.h siglist.h execute_cmd.h ${BASHINCDIR}/filecntl.h trap.h pathexp.h
 subst.o: mailcheck.h input.h $(DEFSRC)/getopt.h $(DEFSRC)/common.h
 subst.o: bashline.h bashhist.h ${GLOB_LIBSRC}/strmatch.h
 subst.o: ${BASHINCDIR}/chartypes.h
 subst.o: ${BASHINCDIR}/shmbutil.h
+subst.o: ${DEFDIR}/builtext.h
 test.o: bashtypes.h ${BASHINCDIR}/posixstat.h ${BASHINCDIR}/filecntl.h
 test.o: shell.h syntax.h config.h bashjmp.h ${BASHINCDIR}/posixjmp.h command.h ${BASHINCDIR}/stdc.h error.h
 test.o: general.h xmalloc.h bashtypes.h variables.h arrayfunc.h conftypes.h array.h hashlib.h
 test.o: quit.h ${BASHINCDIR}/maxpath.h unwind_prot.h dispose_cmd.h
 test.o: make_cmd.h subst.h sig.h pathnames.h externs.h test.h