Rename ObActionValue to ObConfigValue. This holds one of three types.

Rename ObActionValue to ObConfigValue.  This holds one of three types.

1. A string
2. A list of other ObConfigValues
3. A list of actions (ObActionList).

The string type can be returned in various ways such as int, enum, fraction, gravity coordiate.

Provide a ways to save the ObConfigValue into a pointer.  This lets you keep
the value contained withing the ObConfigValue in a variable of its basic type.