[jdk17u-dev] RFR: 8300260: Remove metaprogramming/isSame.hpp [v4]

[George Adams]

> Applies cleanly other than `src/hotspot/share/utilities/devirtualizer.inline.hpp` being called `src/hotspot/share/memory/iterator.inline.hpp` in 17u-dev due to us not backporting https://github.com/openjdk/jdk/commit/9f8bfab29009299e81f4929b5dbd399c21f34d7c

George Adams has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains ten commits:

 - Merge remote-tracking branch 'upstream/master' into isSame
 - Merge remote-tracking branch 'upstream/pr/2691' into isSame
 - Merge remote-tracking branch 'upstream/pr/2690' into isPointer
 - Merge remote-tracking branch 'upstream/master' into conditional
 - final tweak
 - fix IsSame calls in /iterator.inline.hpp
 - Backport c8dd7583a92082bcd2a4dfd5429889e7f0a44050
 - Backport eba87a0ee0410f61ae764293986ecc162f48c707
 - Backport 4c1e66e0abe9e379926e555bd651e9fcc5a0e8b6

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

Changes: https://git.openjdk.org/jdk17u-dev/pull/2692/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2692&range=03
  Stats: 109 lines in 7 files changed: 2 ins; 93 del; 14 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2692.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2692/head:pull/2692

PR: https://git.openjdk.org/jdk17u-dev/pull/2692