removed check for likelihoods for REML fits.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/afe@121 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
added type 3 tests for mixed

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/afe@122 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
removed pbkrtest und reshape2 from depends.

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/afe@123 edb9625f-4e0d-4859-8d74-9fd3b1da38cb