Use rsync to copy tbb libs to avoid relinking every time running make

[cielavenir]

Type

• Bug fix (non-breaking change which fixes an issue): Fixes Open3D 0.19.0 "make install" causes relink #7152
• New feature (non-breaking change which adds functionality). Resolves #
• Breaking change (fix or feature that would cause existing functionality to not work as expected) Resolves #

Motivation and Context

cmake -E copy_directory copies the directory unconditionally without keeping timestamp. Then make thinks that libippc*_tl_tbb.a is updated and needs relinking libOpen3D.so.

In this MR we will use rsync -rut to avoid unnecessary updating.

Checklist:

• I have run python util/check_style.py --apply to apply Open3D code style
  to my code.
• This PR changes Open3D behavior or adds new functionality.
  • Both C++ (Doxygen) and Python (Sphinx / Google style) documentation is
    updated accordingly.
  • I have added or updated C++ and / or Python unit tests OR included test
    results (e.g. screenshots or numbers) here.
• I will follow up and update the code if CI fails.
• For fork PRs, I have selected Allow edits from maintainers.

Description

[update-docs]

Thanks for submitting this pull request! The maintainers of this repository would appreciate if you could update the CHANGELOG.md based on your changes.

[cielavenir]

oh... it is super-sad that Open3D build agent does not have rsync, I thought it should be standard package...

do you mind telling me how this PR can be improved?

[edit] yeah, so the CI passes on MacOS