RFR: 8240567: MethodTooLargeException thrown while creating a jlink image

[Oliver Kopp]

Fix for [JDK-8240567](https://bugs.openjdk.org/browse/JDK-8240567): "MethodTooLargeException thrown while creating a jlink image".

Java still has a 64kb limit: A method may not be longer than 64kb. The idea of the fix is to split up the generated methods in several smaller methods

This is a follow-up to https://github.com/openjdk/jdk/pull/10704. GitHub did not allow me to re-open the PR, because I did a force-push to have one commit.

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Commit messages:
 - 8240567: MethodTooLargeException thrown while creating a jlink image

Changes: https://git.openjdk.org/jdk/pull/14408/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14408&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8240567
  Stats: 254 lines in 2 files changed: 241 ins; 0 del; 13 mod
  Patch: https://git.openjdk.org/jdk/pull/14408.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14408/head:pull/14408

PR: https://git.openjdk.org/jdk/pull/14408