[jdk17u-dev] RFR: 8300265: Remove metaprogramming/isSigned.hpp [v4]

[George Adams]

> Prerequisite to bumping gtest, applies cleanly

George Adams has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 14 commits:

 - remove ref
 - fixup
 - Merge remote-tracking branch 'upstream/master' into isSigned
 - Merge remote-tracking branch 'upstream/pr/2692' into isSigned
 - 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
 - Merge remote-tracking branch 'upstream/pr/2692' into isSigned
 - final tweak
 - fix IsSame calls in /iterator.inline.hpp
 - ... and 4 more: https://git.openjdk.org/jdk17u-dev/compare/f9acc530...d5e9d662

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Changes: https://git.openjdk.org/jdk17u-dev/pull/2693/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=2693&range=03
  Stats: 104 lines in 6 files changed: 3 ins; 90 del; 11 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/2693.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/2693/head:pull/2693

PR: https://git.openjdk.org/jdk17u-dev/pull/2693