Clean and re-indent group code
Re-indent user verif code
Renamed grp.[ch] to users_groups.[ch]
Rename attr state -> policy
Rename attr password -> user_password
Rename attr home -> home_dir
Rename attr comment -> description
Rename attr groups -> groups_secondary
Rename attr group -> group_primary
WIP on user promise tests
WIP
Add Seq support to groups mgmt code
Execute generated commands (needs to process returned values)
Fix changing description of an existing user
Clean group code and add some basic tests
Fix a small return glitch
Added manual/demo tests