Added ShaderInfo.Dependancies which returns a list of all the unique #includes.
The content pipeline effect processor now registers #includes as dependancies.
Fixed misspelling of "dependencies" in my initial commit.
Fixed misspelling of "dependencies".
Another fixed misspelling of "dependencies".
Merge pull request #2038 from SickheadGames/fxdeps

Effect Processor Improvement
Make the Mouse class' default MouseState read-only.
Merge pull request #2050 from PrecisionMojo/_pm/fix-Mouse.GetState-static-init

Fix a NRE in Mouse.GetState() when used to initialize a static field.
Merge branch 'develop' into _pm/develop