bash: 4.3.30 -> 4.4

bash: 4.3.30 -> 4.4

1. Rebase patches:
- fix-run-coproc-run-heredoc-run-execscript-run-test-f.patch
- test-output.patch

2. Drop backported patches:
- CVE-2016-9401.patch
- fix-run-intl.patch

3. Add ${PN}-loadable for loadable builtins which is new features in Bash 4.4

4. The 4.4 fixed CVE-2017-5932 and CVE-2016-0634
- https://security-tracker.debian.org/tracker/CVE-2017-5932
- https://security-tracker.debian.org/tracker/CVE-2016-0634

5. The 4.4 installed include header files, fix bash-dev confilicts
   with lib32-bash-dev
.....
$ bitbake lib32-core-image-sato-sdk
...
|Error: Transaction check error: file /usr/include/bash/config.h
conflicts between attempted installs
|of lib32-bash-dev-4.4-r0.x86 and bash-dev-4.4-r0.core2_64
......

Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>