Applied Raspberry Pi patch sent by Colin Barrett.

git-svn-id: http://urho3d.googlecode.com/svn/trunk@2595 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Add note of Direct3D9 bool shader constants possibly having no effect.
Add support for Color shader parameters inside a Variant (same as Vector4.)
Parse bool shader parameters in Material & RenderPath.



git-svn-id: http://urho3d.googlecode.com/svn/trunk@2596 3bd170d8-ddcf-f82c-f583-7a401ccf5608
Edit comment.


git-svn-id: http://urho3d.googlecode.com/svn/trunk@2597 3bd170d8-ddcf-f82c-f583-7a401ccf5608