Upstream patch `patch-dont-clear-runshared-14.patch`

[zanieb]

patch-dont-clear-runshared-14.patch

Configure nerfs RUNSHARED when cross-compiling, which prevents PGO from running. However, we can often run the target binaries (e.g. x86_64 host and i686 target).

This patch prevents configure from clearing RUNSHARED when cross-compiling, allowing PGO to work in these scenarios.

Related:

• patch-dont-clear-runshared-legacy.patch (for Python ≤3.10)
• patch-dont-clear-runshared.patch (for Python 3.11-3.12)
• patch-dont-clear-runshared-13.patch (for Python 3.13)

[zanieb]

The origin of the code we're patching out is python/cpython@1abe1c5 from https://bugs.python.org/issue14330

[zanieb]

Related python/cpython#113123

[zanieb]

Without this patch (#889) we fail during PGO on x86-64 macOS (which is compiled from an aarch64 machine) with

cpython-3.15> LLVM_PROFILE_FILE="/private/var/folders/lf/wbx6llps6z37wkfpk85_942m0000gn/T/tmpitt550yt/Python-3.15.0a2/code-%p.profclangr"  ./python.exe -m test --pgo --ignore test_json
cpython-3.15> dyld[75293]: Library not loaded: /install/lib/libpython3.15.dylib
cpython-3.15>   Referenced from: <4C4C4460-5555-3144-A1AE-8F5D12BCBCC1> /private/var/folders/lf/wbx6llps6z37wkfpk85_942m0000gn/T/tmpitt550yt/Python-3.15.0a2/python.exe
cpython-3.15>   Reason: tried: '/install/lib/libpython3.15.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/install/lib/libpython3.15.dylib' (no such file), '/install/lib/libpython3.15.dylib' (no such file)
cpython-3.15> make: *** [profile-run-stamp] Abort trap: 6

[zanieb]

@jjhelmus we can drop this patch for the next 3.15 release!