Add test case to demonstrate the name collision that occurs in the generated C# code when a namespace is named System.
Globablly qualify the use of types from the .NET framework's System namespace in the C# module and library.
Since SWIG 3.0 removes support for .NET 1.1, cleanup the C# library by removing the use of the SWIG_DOTNET_1 macro.
Remove using directives from the generated C# code and fully qualify the use of all .NET framework types in order to minimize potential name collisions from input files defining types, namespace, etc with the same name as .NET framework members.
Add support for SWIG2_CSHARP macro to create SWIG 2 backwards compatability mode.
Update documentation to reflect fully qualifying the use of .NET types in the generated code.
Correct spelling of compatibility.
Merge branch 'master' of https://github.com/BrantKyser/swig

- Remove using directives from the generated C# code and fully qualify the use of all .NET
  framework types in order to minimize potential name collisions from input files defining
  types, namespace, etc with the same name as .NET framework members.
- Globally qualify the use of .NET framework types in the System namespace
- Remove .NET 1.1 support, .NET 2 is the minimum for the C# module

Closes #79

* 'master' of https://github.com/BrantKyser/swig:
  Correct spelling of compatibility.
  Update documentation to reflect fully qualifying the use of .NET types in the generated code.
  Add support for SWIG2_CSHARP macro to create SWIG 2 backwards compatability mode.
  Remove using directives from the generated C# code and fully qualify the use of all .NET framework types in order to minimize potential name collisions from input files defining types, namespace, etc with the same name as .NET framework members.
  Since SWIG 3.0 removes support for .NET 1.1, cleanup the C# library by removing the use of the SWIG_DOTNET_1 macro.
  Globablly qualify the use of types from the .NET framework's System namespace in the C# module and library.
  Add test case to demonstrate the name collision that occurs in the generated C# code when a namespace is named System.
Update changes file with previous commit dropping .NET 1.1 support