This patch brings the following improvements :
- Correct the reported CSDVersion, ProductType and the ProductSuite to make it
conform with Win2k3.
- Simplify the GetVersion() API.
- Improve some comments and clarify some variables names.
- Correct a bug on how the version numbers are gathered.
- Improve some code and comments.
- Report us as Windows Server 2003 SP2.
- Update the reported build number.
- Clarify the code.
- Simplify a helper function and add a new one.
- Simplify the RtlVerifyVersionInfo() API by using the helpers functions.