Stop shadowing OpenJDK classes not originated by jsr166
whitespace
Update legal notices to Oracle wording
sync with openjdk
6600143: Remove another 450 unnecessary casts
Sync with OpenJDK; remove all @version tags
Sync with OpenJDK; untabify
License update
copyright year update
6415641: (coll) Getting NavigableMap/NavigableSet right
  and @code are immiscible
Simplify Navigable method names
Updated Navigable interfaces ind implementations
6378729: Remove workaround for 6280605
copyright update for 2006
doc fixes
@since 1.6
doc fixes
null vs non-empty
doc fixes
doc fixes
doc fixes
doc fixes
Update collections framework pointer
better cast hygiene
remove trailing whitespace
E o -> E e
Copyright year updates
Typo.
Documentation improvements
NavigableMap.subMap -> NavigableMap.navigableSubMap, and associated changes
Copyedit pass
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