[cmake-developers] fix-OSX-bundle-rpaths-and-Qt5 topic

[Adam Strzelecki]

> I was looking at the BundleUtilities failure after the above fixes, and I noticed it unconditionally removes paths.

It does that because all bundles frameworks/libraries are referenced by @executable/loader_path and all @rpath references will be replaced, so there no point to have LC_RPATH in executables that will likely point to absolute old library locations.

Please note that this is just an extension to existing BundleUtilities behavior. I intentionally didn't want to support or add an option to bundle framework using @path + LC_PATH.

--Adam