[RHEL/6] Propage the RHEL-6 remediation bash functions library into the kickstart too
(so remediations run in kickstart's post-install phase can make use of it)
[RHEL/6] Introduce new fix_audit_syscall_rule() remediations library function
to be used for creating remediation scripts for audit -S syscall rules
[RHEL/6] audit_network_modifications rule:
* 1) Unify XCCDF ID with OVAL ID in:
     - XCCDF & rule references
* 2) Fix OVAL check:
     - treat 'wa' / 'aw' access modes equally,
     - enhance it to allow stronger masks (like 'rxaw') too
* 3) Add RHEL-6 remediation utilizing the fix_audit_syscall_rule()
     function added in previous commit
[RHEL/6] audit_rules_kernel_module_loading rule:
* Enhance OVAL check to (besides plain 'x') to allow also stronger
  mask (e.g. 'rax'),
* Add RHEL-6 remediation

  Note: It's intentional here for each architecture to check just for
  presence of audit rule specific for that architecture (IOW 32-bit
  version on 32-bit arch, 64-bit version on 64-bit archs, since 32-bit
  kernel object can't be loaded / unloaded into kernel compiled as
  64-bit).
[RHEL/6] Add RHEL-6 remediation for audit_rules_file_deletion_events rule
[RHEL/6] audit_media_exports rule:
* Unify XCCDF ID with OVAL ID (change new name in references too),
* Provide RHEL-6 remediation script
[RHEL/6] audit_rules_unsuccessful_file_modification rule:
* Fix XCCDF description to require audit 32-bit calls on 32-bit system &
  both 32-bit and 64-bit system calls on 64-bit system
* Fix OVAL check - previously it required to audit both 32-bit & 64-bit
  system calls. But there isn't a point in requiring to audit 64-bit system
  calls on 32-bit system (since this can't happen). The current version aligns
  with logic used in other system calls OVAL checks.
* Add RHEL-6 remediation script.
[RHEL/6] audit_rules_time_clock_settime rule:
* Add RHEL-6 remediation.
Merge pull request #353 from iankko/rhel6_audit_syscall_watch_mixed_rules

[RHEL/6] audit syscall watch mixed rules - various fixes