Added the vis_system feature

The vis_system feature has been added which includes all functions
associated with that API feature.
Changed the tabTrigger from log to feature_log

The tabTrigger value has been updated to reflect the name of the file
and the overall naming convention of the snippets
Updated the default member values

Added the description member which is supported in V9
Updated the default API version to 5.72
Added initial code to handle provisioning tags

Added an MvFOREACH iterator over all the children of the provide_xml
file. This code is essentially used as a template code in every module
that uses provisioning