[jdk17u-dev] RFR: 8296967: [JVMCI] rationalize relationship between getCodeSize and getCode in ResolvedJavaMethod

[Severin Gehwolf]

Not clean. Copyright in `HotSpotResolvedJavaMethodImpl.java`. `getCodeSizeTest` in
`TestResolvedJavaMethod.java` fixed up manually, as well as omitted `equalsTest` changes
as that test is not in 17u (because both, JDK-8289687 and JDK-8289094 are not in 17u).

HotSpotResolvedJavaFieldTest.java will need a follow-up, JDK-8297590, in order to fix the test
and let it run. I'll get that backported to 17u once it's in JDK tip.

This pr depends on #933 as that PR changes the signature of the `createField` static method in
`HotSpotResolvedObjectTypeImpl` (which the test fix of JDK-8297590 corrects).

Testing: jvmci tests (with backport of JDK-8297590 applied). Existing and newly included tests pass.

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Depends on: https://git.openjdk.org/jdk17u-dev/pull/933

Commit messages:
 - 8296967: [JVMCI] rationalize relationship between getCodeSize and getCode in ResolvedJavaMethod

Changes: https://git.openjdk.org/jdk17u-dev/pull/934/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=934&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296967
  Stats: 309 lines in 8 files changed: 231 ins; 38 del; 40 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/934.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/934/head:pull/934

PR: https://git.openjdk.org/jdk17u-dev/pull/934