Scaladoc'ing scalautils.


git-svn-id: http://scalatest.googlecode.com/svn/trunk@4916 fd1274fd-080f-5963-8033-43ee40fcd1de
Scaladoc'd TripleEqualsInvocation and TripleEqualsInvocationOnInterval.


git-svn-id: http://scalatest.googlecode.com/svn/trunk@4917 fd1274fd-080f-5963-8033-43ee40fcd1de
Scaladocing LowPriorityConversionCheckedConstraint and realized don't need the Legacy variants. 


git-svn-id: http://scalatest.googlecode.com/svn/trunk@4918 fd1274fd-080f-5963-8033-43ee40fcd1de