Due to how CODEOWNERS works, if a file matches two rules, the later rule will take precedence.

Because of this, /mlir/include/mlir/Dialect/Vector rules were not matching against /mlir/include/mlir/Dialect/Vector/IR .

This patch adds users in the directory rules, to the finer grained rules, which I'm guessing was the intended effect that they expected when they were added.

This patch removes forced-sw-shadow-stack related statements in
RISCVFeatures.td, which was missed in the last patch
https://github.com/llvm/llvm-project/pull/115355

New unittest versions don't have the "s" version.

This patch introduces new llvm.set.fpmr intrinsics for setting value in
FPMR register and adds its lowering to series of read-compare-write
instructions. This intrinsic will be generated during lowering of FP8 C
intrinsics into LLVM-IR introduced in later patch.

***This is an experimental implementation of handling fp8 intriniscs and
is likely to change in the future.***

The `compiler` parameter is not supported in the `expectedFailureDarwin`
decorator.

Change the decorator to `expectedFailureAll`, which is fine because
this only affects the `dsym` variant (which is only a macOS variant).

Follow-up to https://github.com/llvm/llvm-project/pull/111859. Prior
to this PR we would never run these tests with DWARFv5 on older Clang
versions (since default wasn't DWARFv5 on macOS until recently). The
patch explicitly started running some of these tests with DWARFv5.
These were failing on the macOS matrix bot (with Clang-15/Clang-17).

```
======================================================================
FAIL: test_inline_static_members_dwarf5_dsym (TestConstStaticIntegralMember.TestCase)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-matrix/llvm-project/lldb/packages/Python/lldbsuite/test/lldbtest.py", line 1769, in test_method
    return attrvalue(self)
  File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-matrix/llvm-project/lldb/test/API/lang/cpp/const_static_integral_member/TestConstStaticIntegralMember.py", line 150, in test_inline_static_members_dwarf5
    self.check_inline_static_members("-gdwarf-5")
  File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-matrix/llvm-project/lldb/test/API/lang/cpp/const_static_integral_member/TestConstStaticIntegralMember.py", line 129, in check_inline_static_members
    self.check_global_var("A::int_val", "const int", "1")
  File "/Users/ec2-user/jenkins/workspace/llvm.org/lldb-cmake-matrix/llvm-project/lldb/test/API/lang/cpp/const_static_integral_member/TestConstStaticIntegralMember.py", line 118, in check_global_var
    self.assertGreaterEqual(len(var_list), 1)
AssertionError: 0 not greater than or equal to 1
```

Fixed the @skipUnlessAArch64MTELinuxCompiler decorator in case of
Windows host.

This was added in 681cde7dd8b5613dbafc9ca54e0288477f946be3, but isn't
currently documented.