[Enhancement] [RHEL/6] mount_option_noexec_removable_partitions rule:
* when checking 'noexec' option on removable partitions verify the underlying
partition / device truly exists on the system in question (to return
appropriate result),
* couple of other cosmetic changes to OVAL check (make id= attribute be the
leading one, version= attribute the last one, list OVAL objects in the order
OVAL tests are listed, add blank rows for better overall check readability etc.)