Extend INSTALL_RPATH to include parent directories

[ekomarova]

This PR updates the INSTALL_RPATH for the _ufuncs target on Unix systems to improve runtime discovery of dependent shared libraries such as libintlc.so.5 (IntelPython/mkl_fft#146).
In recent builds (e.g., mkl_umath 0.1.4), users encountered runtime errors like:

ImportError: libintlc.so.5: cannot open shared object file: No such file or directory

Although the library was bundled with the wheel, it could not be located at runtime due to limited RPATH configuration.
The updated INSTALL_RPATH now includes additional parent directories. This allows the dynamic linker to resolve libraries located in upper-level paths relative to the extension module.

[ekomarova]

@vtavana I wanted to ask you if it makes sense to update this as well https://github.com/IntelPython/mkl_umath/blob/main/CMakeLists.txt#L143?
And I will need to test this change as well, since I do not know if it will have an effect or not (I hope yes 🤗)

[vtavana]

@vtavana I wanted to ask you if it makes sense to update this as well https://github.com/IntelPython/mkl_umath/blob/main/CMakeLists.txt#L143? And I will need to test this change as well, since I do not know if it will have an effect or not (I hope yes 🤗)

Yes, I believe you have to do the same here for _patch.

[ekomarova]

I'm going to test this change in the wheel. I'll let you know as soon as the results are available

[ekomarova]

@ndgrigorian confirmed that the wheel built with this change is working correctly. I think we can merge this and create a new release. I also managed to install the package locally and reproduce the scenario, it works:

>> python -m venv umath_014_v2
>> source umath_014_v2/bin/activate
>> pip install --no-cache-dir mkl_umath-0.1.4-5-cp312-cp312-manylinux_2_28_x86_64.whl
>> python
Python 3.12.9 | packaged by conda-forge | (main, Mar  4 2025, 22:48:41) [GCC 13.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import mkl_umath
>>>

[ekomarova]

Please review

[ndgrigorian]

LGTM, resolves the issue when I tested with Python 3.11 and 3.12