Xcode 14 no longer accepts an empty signing identity for macOS.
However, Xcode in general does not accept an ad-hoc signing
identity for iOS.  Switch based on the target platform.

Fixes: #23609

    warning: Run script build phase 'Run Script' will be run during every
    build because it does not specify any outputs.

On some Xcode versions, `xcodebuild` may warn:

    ... xcodebuild[...]  [MT] DVTSDK: Warning: SDK path collision for path ...

Teach RunCMake to drop such incidental lines before matching against
expected output.

Merge-request: !7350

Since commit 2c9e623 (Find{BLAS,LAPACK}: Add support for the NVHPC
LAPACK library, 2021-05-05, v3.21.0-rc1~192^2) we try the `-fortranlibs`
option as a dependency of the NVHPC LAPACK.  That flag is specific to
the NVHPC/PGI compilers, so use it conditionally with them.

Without this modification, CMake fails to find LAPACK if

- compiler ID is GNU
- `BLA_STATIC` is `ON`
- `BLA_VENDOR` is not defined or set to `All`

Fixes: #23705, #22878

Merge-request: !7452

`xcnotary` is no longer needed since `altool` has been deprecated in
favor of `notarytool`, which has builtin support for waiting.

Merge-request: !7463

Merge-request: !7520