RFR: 8284780: Need methods to create pre-sized HashSet and LinkedHashSet [v14]

[XenoAmess]

> as title.

XenoAmess has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 16 commits:

 - Merge branch 'master' of https://git.openjdk.java.net/jdk into fix_8284780
 - Merge remote-tracking branch 'openjdk/master' into fix_8284780
   
   # Conflicts:
   #	test/jdk/java/util/HashMap/WhiteBoxResizeTest.java
 - add 8284780 to test
 - redo the tests
 - rename items to elements
 - add test for newHashSet and newLinkedHashSet
 - revert much too changes for newHashSet
 - add more replaces
 - add more replaces
 - add more replaces
 - ... and 6 more: https://git.openjdk.java.net/jdk/compare/7cb368b3...117918f4

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Changes: https://git.openjdk.java.net/jdk/pull/8302/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8302&range=13
  Stats: 162 lines in 31 files changed: 120 ins; 0 del; 42 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8302.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8302/head:pull/8302

PR: https://git.openjdk.java.net/jdk/pull/8302