RFR: 8248862: Implement Enhanced Pseudo-Random Number Generators [v2]

[Jim Laskey]

> This PR is to introduce a new random number API for the JDK. The primary API is found in RandomGenerator and RandomGeneratorFactory. Further description can be found in the JEP https://openjdk.java.net/jeps/356 .

Jim Laskey has updated the pull request incrementally with one additional commit since the last revision:

  8248862: Implement Enhanced Pseudo-Random Number Generators
  
  Updated RandomGeneratorFactory javadoc.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/1273/files
  - new: https://git.openjdk.java.net/jdk/pull/1273/files/7469ca58..b24024bb

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=1273&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=1273&range=00-01

  Stats: 39 lines in 6 files changed: 16 ins; 0 del; 23 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1273.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1273/head:pull/1273

PR: https://git.openjdk.java.net/jdk/pull/1273