This checkin includes three changes because I was disconnected from the net. 1. I changed Results to Outcomes.
2. I did the tests and functinoality for should === with a tolerance, which should wrap up the should === 
feature. And 3. I started adding tolerance to "should equal".



git-svn-id: http://scalatest.googlecode.com/svn/trunk@4766 fd1274fd-080f-5963-8033-43ee40fcd1de