Minor javadoc fixes.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1535052 13f79535-47bb-0310-9956-ffa450edef68
Fixed a rounding error when formatting angles.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1535053 13f79535-47bb-0310-9956-ffa450edef68