[code-reflection] RFR: 8337162: Support primitives in patterns [v5]

[Mourad Abbay]

> Support primitives in patterns

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

 - Create JavaType of ExactConversionSupport from its class descriptor (compiler couldn't find the class)
 - Update how we build the model for testing a conversion

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Changes:
  - all: https://git.openjdk.org/babylon/pull/246/files
  - new: https://git.openjdk.org/babylon/pull/246/files/60c5f55f..622612a0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=246&range=04
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=246&range=03-04

  Stats: 72 lines in 2 files changed: 47 ins; 15 del; 10 mod
  Patch: https://git.openjdk.org/babylon/pull/246.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/246/head:pull/246

PR: https://git.openjdk.org/babylon/pull/246