master
8187443: Forest Consolidation: Move files to unified layout
8193300: Miscellaneous changes imported from jsr166 CVS 2018-01
8267174: Many test files have the wrong Copyright header
8389219: Implement JEP 401: Value Objects (Preview) 8389220: Implement JEP 539: Strict Field Initialization in the JVM (Preview)
8259622: TreeMap.computeIfAbsent deviates from spec
8199318: add idempotent copy operation for Map.Entry
8247605: Avoid array allocation when concatenating with empty string