RFR: JDK-6361826: (reflect) provide method for mapping strings to class object for primitive types [v2]

[Joe Darcy]

> Going over some old issues and found this RFE, posting without any tests or a CSR first to get some feedback on the overall API.

Joe Darcy has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Update API proposal.
 - Merge branch 'master' into JDK-6361826
 - JDK-6361826: (reflect) provide method for mapping strings to class object for primitive types

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/14743/files
  - new: https://git.openjdk.org/jdk/pull/14743/files/24b7aa81..e16b4e90

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14743&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14743&range=00-01

  Stats: 47203 lines in 345 files changed: 3708 ins; 42009 del; 1486 mod
  Patch: https://git.openjdk.org/jdk/pull/14743.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14743/head:pull/14743

PR: https://git.openjdk.org/jdk/pull/14743