8004518: Add in-place operations to Map 8010122: Add defaults for ConcurrentMap operations to Map Reviewed-by: darcy, briangoetz, mduigou, dholmes, ulfzibis Contributed-by: Doug Lea <dl@cs.oswego.edu>, Henry Jen <henry.jen@oracle.com>, Akhil Arora <akhil.arora@oracle.com>, Peter Levart <peter.levart@gmail.com>, Mike Duigou <mike.duigou@oracle.com>

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