This patch allows bash to cross-compile readline without trying to execute
unavailable tools.

--- ./configure.orig	2005-07-29 11:10:59.000000000 +0200
+++ ./configure	2005-07-29 19:27:18.000000000 +0200
@@ -4438,8 +4438,8 @@
 if test "${ac_cv_rl_version+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test "$cross_compiling" = yes; then
-  ac_cv_rl_version='4.2'
+  if true || test "$cross_compiling" = yes; then
+  ac_cv_rl_version='5'
 else
   cat >conftest.$ac_ext <<_ACEOF
 #line $LINENO "configure"