WKT2 formatting:
- Completed ID[...] with the URI[...] inner element.
- Formatter provides information about the enclosing element (necessary for the above URI[...]).
- Consolidation of Formatter.getLinearUnit()/getAngularUnit() in a single getContextualUnit(...).
- Explicit requests for new lines instead of trying to guess automatically - the later was too convolved.
- Javadoc.


git-svn-id: https://svn.apache.org/repos/asf/sis/branches/JDK7@1567407 13f79535-47bb-0310-9956-ffa450edef68