Merge branch 'topic/timw/fetchcontent_mkdir'

* topic/timw/fetchcontent_mkdir:
  Pass source directory to FetchContent_Populate for older CMakes
  Workaround for configure failures with FETCHCONTENT_FULLY_DISCONNECTED

ZeekBundle.cmake

@@ -123,7 +123,8 @@ function (ZeekBundle_Add)
     # Fetch the package by delegating to FetchContent.
     FetchContent_Declare(dl_${arg_NAME} ${arg_FETCH})
     string(TOLOWER "dl_${arg_NAME}" internalName)
-    FetchContent_Populate(${internalName})
+    FetchContent_Populate(${internalName} SOURCE_DIR ${arg_FETCH})
+    file(MAKE_DIRECTORY "${${internalName}_BINARY_DIR}")
     # Build the package and verify that it was found.
     zeekbundle_build(${arg_NAME} "${${internalName}_SOURCE_DIR}" "${${internalName}_BINARY_DIR}"
                      ${arg_CONFIGURE})