bootstrap: silence warnings about colliding libraries

We were previously overwriting PackageDescription.dll and would have
inconsistent builds.  Adjust the rules to make the builds deterministic.

Author: compnerd

Sources/PackageDescription4/CMakeLists.txt

@@ -23,9 +23,11 @@ foreach(PACKAGE_DESCRIPTION_VERSION 4 4_2)
   set_target_properties(PD${PACKAGE_DESCRIPTION_VERSION} PROPERTIES
     Swift_MODULE_NAME PackageDescription
     Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/runtimes/${PACKAGE_DESCRIPTION_VERSION}
+    OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/runtimes/${PACKAGE_DESCRIPTION_VERSION}
     OUTPUT_NAME PackageDescription
+    ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/runtimes/${PACKAGE_DESCRIPTION_VERSION}
     LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/runtimes/${PACKAGE_DESCRIPTION_VERSION}
-    ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/runtimes/${PACKAGE_DESCRIPTION_VERSION})
+    RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/runtimes/${PACKAGE_DESCRIPTION_VERSION})
 endforeach()
 
 install(TARGETS PD4 PD4_2