This way if anyone wants to wipe their entire Build directory, it won't break entirely.
I am not responsible if anyone wipes the CMake folder. That is definitely not supported.
* Restore Windows installing to `C:\Games` by default.
* Restore Windows installing to the `Program` subdirectory.
* Use actual newlines in the `Build` documentation files.
* Remove the text that says that cmake is unstable.
There are two targets you may not be familiar with, `install` and `package`.
* For Linux, `install` now defaults to `/usr/local`, but you can set it back to `/opt` with `cmake -DCMAKE_INSTALL_PREFIX=/opt` if you wish.
* For Windows, `install` may not work, but this is not a target you would want usually.
* For Linux, `package` has not been tested yet. It will likely create an archive file of what is installed.
* For Windows, `package` will create an NSIS package that can be used to install StepMania. One minor change as a result is that the binary and companion dlls will be placed in `bin` instead of `Program` now, but it makes no difference code-wise.
Mac OS X users: for now, use the `dmg` target instead.
This commit does *not* deprecate the original nsi script yet. The Texture Font Generator program has not been addressed yet.
Tatsh