Moderate: bash security and bug fix update (Oracle Linux 7)

[4.2.46-28]
- CVE-2016-9401 - Fix crash when '-' is passed as second sign to popd
Resolves: #1429838

[4.2.46-27]
- CVE-2016-7543: Fix for arbitrary code execution via SHELLOPTS+PS4 variables
Resolves: #1426026

[4.2.46-26]
- CVE-2016-0634: Fix for arbitrary code execution via malicious hostname
Resolves: #1379237

[4.2.46-25]
- Plug a leak related to compound assignments
Resolves: #1264101

[4.2.46-24]
- Recognize cd -e
Resolves: #1267478

[4.2.46-23]
- Add a condition before setting pipeline_pgrp to shell_pgrp
Resolves: #1377496

[4.2.46-22]
- Avoid crash in parameter expansion while expanding long strings
Resolves: #1403255