build: workaround CMake 3.15
build: workaround CMake 3.15

CMake 3.15 fails to place the import library separately from the DLL.
Adjust the paths as a workaround.

abertelrud/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager