Start In Platform

[Former user]

Add the option to start in a Platform such as MAME without the option to back out to the Platform list screen. This way for people using this in their Arcade cabinet for one platform alone who want the user to have the option to select games on one system such as MAME, don't get confused by the Platform screen.

[Jason Burns]

This is a duplicate of issue #353.

[Jason Carr]

Duplicate of #353.