Moved Length and Size from matchers to enablers package.


git-svn-id: http://scalatest.googlecode.com/svn/trunk@5112 fd1274fd-080f-5963-8033-43ee40fcd1de
init ver


git-svn-id: http://scalatest.googlecode.com/svn/trunk@5113 fd1274fd-080f-5963-8033-43ee40fcd1de