bash: CVE-2016-0634

bash: CVE-2016-0634

A vulnerability was found in a way bash expands the $HOSTNAME.
Injecting the hostname with malicious code would cause it to run
each time bash expanded \h in the prompt string.

Porting patch from <https://ftp.gnu.org/gnu/bash/bash-4.3-patches/
bash43-047> to solve CVE-2016-0634

CVE: CVE-2016-0634

Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>