Fixed BlendState.ToString() to not display "Opaque" for all custom states.
Fixed BlendState.ToString() to display the short type name instead of the full namespace-qualified type name.
Added ToString() to DepthStencilState and RasterizerState which will identify if the state is one of the preallocated static states.
Merge branch 'develop' into BlendStateToString
GraphicsResource now overrides ToString() to return the Name.
Fixed the render state classes to use GraphicsResource.Name instead of ToString().
Merge pull request #1967 from SickheadGames/BlendStateToString

Improving BlendState/RasterizerState/DepthStencilState.ToString()