RFR: 8259948: Aarch64: Add cast nodes for Aarch64 Neon backend [v10]

[Wang Huang]

> * In this issue, we plan to complete all missing implementation for aarch64 neon backend. For example, cast from Byte to Long, cast from Long to Byte, and so on.
> * It may be a solver of JDK-8269866, or part of it.

Wang Huang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 11 commits:

 - Merge branch 'master' into JDK-8259948
 - sync asmtest.out.h
 - remove useless codes
 - merge master & fix conflict
 - code refine
 - fix bugs
 - fix codes
 - fix codes
 - fix code style
 - fix bugs
 - ... and 1 more: https://git.openjdk.java.net/jdk/compare/947d52c4...92c1404a

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Changes: https://git.openjdk.java.net/jdk/pull/4839/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4839&range=09
  Stats: 539 lines in 6 files changed: 274 ins; 71 del; 194 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4839.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4839/head:pull/4839

PR: https://git.openjdk.java.net/jdk/pull/4839