bash: fixed ptest run-builtins failed

1. redirect the stderr output of the command exec with -l option to
   /dev/null.
   Because when we run command exec with -l option in builtins.tests,
   it is a login shell, so it would read the file /etc/profile, that
   file executes the /usr/bin/resize which added by commit:
	 cc6360f4c4d97e0000f9d3545f381224ee99ce7d
   The /usr/bin/resize is produced by busybox that source code resize.c
   contains:
	fprintf(stderr, ESC"7" ESC"[r" ESC"[999;999H" ESC"[6n");
   In the end, it outputs an escape sequence to the stderr, so when we
   compare the test output file /tmp/xx with builtins.right, it failed.
   we need to redirect the stderr output to the /dev/null to solve the
   problem.

2. ensure the target system contains the locales "en_US.UTF-8".
   Because when run the run-builtins, it executes the source5.sub file
   that contain:
	LC_ALL=en_US.UTF-8
   such as add the following to the local.conf:
	IMAGE_LINGUAS_append = " en-us"

(From OE-Core rev: 5f82f3df7d4a7d6ae9a1ea3b6bc1d620a3d6c329)

Signed-off-by: Dengke Du <dengke.du@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/bash/bash/fix-run-builtins.patch

@@ -0,0 +1,33 @@
+From 0c4cab9594c96c2dc435a8d9724605824bcbf917 Mon Sep 17 00:00:00 2001
+From: Dengke Du <dengke.du@windriver.com>
+Date: Tue, 19 Apr 2016 02:57:45 -0400
+Subject: [PATCH] fix run-builtins failed
+
+FAIL: run-builtins
+1. redirect the stderr output of command exec with -l option in
+   builtins.tests to /dev/null
+2. ensure the system contain the locales "en_US.UTF-8"
+
+Upstream-Status: Pending
+
+Signed-off-by: Dengke Du <dengke.du@windriver.com>
+---
+ tests/builtins.tests | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/builtins.tests b/tests/builtins.tests
+index 9d77520..63f3af8 100644
+--- a/tests/builtins.tests
++++ b/tests/builtins.tests
+@@ -109,7 +109,7 @@ esac
+ 
+ # test options to exec
+ (exec -a specialname ${THIS_SH} -c 'echo $0' )
+-(exec -l -a specialname ${THIS_SH} -c 'echo $0' )
++(exec -l -a specialname ${THIS_SH} -c 'echo $0' ) 2> /dev/null
+ # test `clean' environment.  if /bin/sh is bash, and the script version of
+ # printenv is run, there will be variables in the environment that bash
+ # sets on startup.  Also test code that prefixes argv[0] with a dash.
+-- 
+2.8.1
+

meta/recipes-extended/bash/bash_4.3.30.bb

@@ -20,6 +20,7 @@ SRC_URI = "${GNU_MIRROR}/bash/${BP}.tar.gz;name=tarball \
            file://test-output.patch \
            file://fix-run-coproc-run-heredoc-run-execscript-run-test-f.patch \
            file://run-ptest \
+	   file://fix-run-builtins.patch \
            "
 
 SRC_URI[tarball.md5sum] = "a27b3ee9be83bd3ba448c0ff52b28447"