swift

fa4956f9 - Merge pull request #23713 from Rostepher/fix-stdlib-install-name-dir-5.1-03-18-2019

Merge pull request #23713 from Rostepher/fix-stdlib-install-name-dir-5.1-03-18-2019 [Build System: CMake] Add back the missing install_name_dir for the standard library (5.1 03-18-2019 branch).