Reduce unnecessary calls to Player.CreateP

[V H. U]

Since CreateP is one of the most computationally expensive calls in the game, I'm going to spend some time to make sure that it is only called when needed. I think I'm seeing some double calls in some of the transformations.

As another part of this, I want to move the turn progression code into a fixed method as opposed to the way it is just book-ended into most of the actions that use up a turn.

I plan on starting this after I finish the TF engine, if anyone else wants to give it a go beforehand, feel free.

[V H. U]

done as of 0.7