[clang] [clang] Implement CWG1719 "Layout compatibility and cv-qualification revisited" (PR #82358)

[Aaron Ballman via cfe-commits]

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@@ -120,6 +119,10 @@ Resolutions to C++ Defect Reports
   in the template parameters, but is deduced from a previous argument.
   (`#78449: <https://github.com/llvm/llvm-project/issues/78449>`_).
 
+- ``const`` and ``volatile`` qualifiers are now ignored when evaluating
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AaronBallman wrote:

Hmmm, how about: `Type qualifications are now ignored when evaluating layout compatibility of two types." so we can side-step things like `__restrict` or type attributes?

https://github.com/llvm/llvm-project/pull/82358