#12 Start of adding support for Platform

[Zackary Geers]

Adding in the start of specifiying platform so that you can compile to non-AnyCPU targets.

In Visual Studio, the platform is now called "Platform", not "Any CPU". This is to prevent confusion on what platform you are really compiling to. Visual studio supports picking both a Target (Debug) and a Platform (Platform) on each project. For proper Visual studio support, this should be an array of platforms, not a single one, and then you pick what the platform for the project.

Nant has a simpler view of that will match with how Prebuild views the target. Nant has the platform at the CSC level, so a Projects maps to a csc pefectly.

[Zackary Geers]

Patch against rev 287 for adding support for platform

[D. Moonfire]

Currently merging changes with other options.