Finished create.c

Almost into the game.  Create.c is converted, now I've got 3 functions left to finish the dependencies for before I'm in the game.

makeplayer
newcavelevel
checkmail

I think I've spent at least 20% of my time doing explicit casts.  One core difference between C# and C is that C# considers casting to a smaller size to be a compile error that requires a specific cast (which is fair).