View source for User Wallet PlugIn

We are increasingly creating more and more devices that interface with Internet content. These Internet media frequently need access to user specific information, including but not limited to:

* User Name
* Email Address
* Password

The idea, very simply, is to have any plugins which wish to store data, simply register themselves with the plugin, and therefore have access to a couple of public functions:

* void StoreKey(string sKeyName, sKeyValue)
* string RetrieveKey(string sKeyName)

As implied by the above API, both key names and their values are simply C++ strings.

Two Domains:

* User - Keys in here are stored per-user
* Device - Keys in here are stored per-device