RFR: 8285149: Using HashMap.newHashMap to replace new HashMap(int) [v2]

[XenoAmess]

> These are the changes that too many to be reviewed in 8186958, thus split some of them out.

XenoAmess has updated the pull request incrementally with two additional commits since the last revision:

 - add more replaces
 - add more replaces

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8301/files
  - new: https://git.openjdk.java.net/jdk/pull/8301/files/2ac4d7bc..28afb90b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8301&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8301&range=00-01

  Stats: 109 lines in 64 files changed: 0 ins; 10 del; 99 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8301.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8301/head:pull/8301

PR: https://git.openjdk.java.net/jdk/pull/8301