[packages] bash: force linking against internal libreadline.a, fixes Backfire build on CentOS 5.6

git-svn-id: svn://svn.openwrt.org/openwrt/packages@30653 3c298f89-4303-0410-b956-a3cf2f4a3e73

utils/bash/patches/001-compile-fix.patch

@@ -1,8 +1,6 @@
-Index: bash-4.2/execute_cmd.c
-===================================================================
---- bash-4.2.orig/execute_cmd.c	2011-07-04 11:16:23.000000000 +0200
-+++ bash-4.2/execute_cmd.c	2011-07-04 11:17:33.000000000 +0200
-@@ -2202,7 +2202,11 @@
+--- a/execute_cmd.c
++++ b/execute_cmd.c
+@@ -2202,7 +2202,11 @@ execute_pipeline (command, asynchronous,
    /* If the `lastpipe' option is set with shopt, and job control is not
       enabled, execute the last element of non-async pipelines in the
       current shell environment. */