RFR: 8313875: Use literals instead of static fields final in java.util.Math: twoToTheDoubleScaleUp, twoToTheDoubleScaleDown [v2]

[Andrey Turbanov]

> Couple of static fields in Math are used only once and can be replaced with literals `0x1p512`/`0x1p-512 `

Andrey Turbanov has updated the pull request incrementally with one additional commit since the last revision:

  8313875: Make fields final in java.util.Math: twoToTheDoubleScaleUp, twoToTheDoubleScaleDown
  
  completely remove the fields. Use literals instead.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/14875/files
  - new: https://git.openjdk.org/jdk/pull/14875/files/759180e3..4e154831

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14875&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14875&range=00-01

  Stats: 6 lines in 1 file changed: 0 ins; 4 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14875.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14875/head:pull/14875

PR: https://git.openjdk.org/jdk/pull/14875