Inline the matrix comparison. This is safer since it make more obvious where the infinite recersivity may happen
(in the call to Matrices.equals(this, ...)).


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1606312 13f79535-47bb-0310-9956-ffa450edef68
Added a (hopefully temporary) tolerance threshold when checking if the result of MathTransform concatenation is the identity transform.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1606594 13f79535-47bb-0310-9956-ffa450edef68
Merge from the JDK8 branch.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1606595 13f79535-47bb-0310-9956-ffa450edef68