Ice Builder for Visual Studio 4.1.1

The main updates in the Ice Builder version 4.1.1 are:

• Refactor WinRT project property sheet properties.
• Fixed an issue that could cause a null pointer exception when disabling the builder for a WinRT based project.
• Fixed an issue that could cause a null pointer exception when opening a project without a solution.
• Fixed an issue were project properties were not correctly evaluated after the builder was enabled because
  MSBuild was using a cached project.