Added deprecation warning and include in diffusivitymillingtonquirk.hh, which...

Added deprecation warning and include in diffusivitymillingtonquirk.hh, which was moved one folder up

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@11807 2fb0f335-1f38-0410-981e-8018bf24f1b0