Simplify LogarithmicTransform1D by removing the explicit support of arbitrary logarithm bases. Instead, for the rare
cases where someone wants a base other than e or 10, we concatenate the natural logarithm with a linear transform.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1605093 13f79535-47bb-0310-9956-ffa450edef68