d3d9: Show an error when default shaders fail to compile

Also, ran into more newline issues so added a .gitattributes file.  I'd normally want to avoid polluting history but there are only a couple files and would rather not hit this in the future, so better to do it now than when there are more.

See b97af10, 0039eab, 32fc4c7, and 42fe8ee for the code changes.

-[Unknown]