Get away from serialized settings storage

Requesting to get away with saving all settings in one giant serialized variable.

Dealing with a 6-7 upgrade and the settings didn't come through. Having to paste the serialized settings results from {variable} and manually insert them in our upgrade helper scripts. Too cumbersome to use the actual functions in the module.

Also noticed that the variable entry is rather bloated when the rule is rather simple; like no one can edit their account except admins (with SSO type setups). The variable table has this issue from lots of sources.

I know the admin UI is rather complex, so just dumping it out is MUCH easier. But it seems doable to place a ruleset by profile field, and create that dataset with a nice broken out function. Then that could be borrowed for say a drush command or script, etc. (See Taxonomy Access Control _taxonomy_access_format_grant_record for an example.)

Thanks.