TRAC #22041

Added abstract methods for setting rasterizer, blend, depth stencil, render
targets and scissors on Renderer. Implemented methods on Renderer9 using the
state setting from Context as a reference and new members for storing prevously
set state to minimize graphics device calls. Implemented methods on Renderer11
with the UNIMPLEMENTED notice.

Signed-off-by: Shannon Woods
Signed-off-by: Daniel Koch

Author:    Geoff Lang

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1421 736b8ea6-26fd-11df-bfd4-992fa37f6226