Added support for dependencies in MetadataStandard.
For example ISO 19111 standard depends on ISO 19115.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1627067 13f79535-47bb-0310-9956-ffa450edef68
Reorder properties in the more common (x,y,z,t) order. No significant code change in this commit.

git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1627163 13f79535-47bb-0310-9956-ffa450edef68
Better inferrence of accuracy to use in TemporalExtent and VerticalExtent WKT.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK8@1627164 13f79535-47bb-0310-9956-ffa450edef68
Merge from the JDK8 branch.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1627171 13f79535-47bb-0310-9956-ffa450edef68