RFR: 8315810: Reimplement sun.reflect.ReflectionFactory::newConstructorForSerialization with method handles [v3]

[Mandy Chung]

> This reimplements `sun.reflect.ReflectionFactory::newConstructorForSerialization` with method handles.
> 
> This API currently generates the bytecode which fails the verification because `new C; invokespecial A()` where the given class `C` and invoke a no-arg constructor of `C`'s first non-`Serializable` superclass `A` is not a valid operation per the VM specification. VM special cases the classes generated for reflection to skip verification for the constructors generated for serialization and externalization.  This change will allow such VM hack to be removed.
> 
> A `jdk.reflect.useOldSerializableConstructor` system property can be set to use the old implementation in case if customers run into any compatibility issue.   I expect this change has very low compatibility risk.   This system property is undocumented and will be removed in a future release.

Mandy Chung has updated the pull request incrementally with one additional commit since the last revision:

  review feedback

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15600/files
  - new: https://git.openjdk.org/jdk/pull/15600/files/fb3bf590..c4e39d12

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15600&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15600&range=01-02

  Stats: 10 lines in 2 files changed: 0 ins; 5 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/15600.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15600/head:pull/15600

PR: https://git.openjdk.org/jdk/pull/15600