RFR: 8301788: AlgorithmId should keep lowercase characters from 3rd party providers [v3]

[Weijun Wang]

> Keep the "NAME -> 1.2.3.4" mapping unchanged but modify "1.2.3.4 -> NAME" to "1.2.3.4 -> Name".

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

 - useless import
 - fix comments

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/12410/files
  - new: https://git.openjdk.org/jdk/pull/12410/files/61f3448c..42fb5d4a

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12410&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12410&range=01-02

  Stats: 4 lines in 2 files changed: 0 ins; 1 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/12410.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12410/head:pull/12410

PR: https://git.openjdk.org/jdk/pull/12410