Cherrypicked from branch PortletState.
Resolved PORTLETSPEC3-43. The classes PortletParameters and
MutablePortletPrameters contained methods with long, redundant names.
The names were shortened to remove redundancy. Updated the
diagram to reflect the new names.
Also fixed several typos in the javadoc comments of other classes.

Conflicts:

	portlet-api_3.0/src/main/javadoc/overview.html
corrected typo in PortletParameters