master
8193300: Miscellaneous changes imported from jsr166 CVS 2018-01
8187443: Forest Consolidation: Move files to unified layout
8292317: Missing null check for Iterator.forEachRemaining implementations
8207003: Miscellaneous changes imported from jsr166 CVS 2018-09
8214687: Optimize Collections.nCopies().hashCode() and equals()
8314236: Overflow in Collections.rotate
8294693: Add Collections.shuffle overload that accepts RandomGenerator interface
6323374: (coll) Optimize Collections.unmodifiable* and synchronized*
8266571: Sequenced Collections