Hugs98 for .NET examples

• basic/Env.hs -- static method invocation example.
• basic/Http.hs -- slurping URLs.
• basic/Mail.hs -- sending mail using the .NET framework classes.
• delegate/Delegate.hs -- wrapping up Haskell function value as a delegator; demonstrates in the context of an ultra-simple WinForms C# application.
• callin/CallIn.hs -- low-level example of how to call into Haskell from .NET code.
• class/NewObj.hs -- shows how to dynamically generate a .NET class whose methods are all implemented by Haskell functions.
• xml/Xml.hs -- demonstrates how to use the System.Xml classes to create an XML parser in Haskell.
• forms/Forms.hs -- another WinForms example.