RFR: 8329750: Change Universe functions to return more specific Klass* types [v2]

[Stefan Karlsson]

> We have various functions in Universe that returns Klass* where they could be returning TypeArrayKlass* and ObjArrayKlass* instead. If we change these functions we could get rid of some casts in the code. Does this seem like a reasonable change?

Stefan Karlsson has updated the pull request incrementally with one additional commit since the last revision:

  Update src/hotspot/share/classfile/systemDictionary.cpp
  
  Dean's suggestion
  
  Co-authored-by: Dean Long <17332032+dean-long at users.noreply.github.com>

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/18652/files
  - new: https://git.openjdk.org/jdk/pull/18652/files/fc2a4a9f..d36f650d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18652&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18652&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18652.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18652/head:pull/18652

PR: https://git.openjdk.org/jdk/pull/18652