Fix: cannot build after #7060 on Win64 (#7754)

* Fix: cannot build after #7060 on Win64

* add double-quotes to `compiler.S.flags`

* fix windows-specific processes (`recipe.hooks.linking.prelink.[12].pattern.windows`)

* rewrite processing of "mkdir" and "cp" in python because of platform-independence

* make consistent with the use of quotation marks in other *.py files

tools/mkdir.py

@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+# Platform-independent `mkdir`
+
+import argparse
+import pathlib
+import sys
+
+def main():
+    parser = argparse.ArgumentParser(description='Platform-independent `mkdir`')
+    parser.add_argument('-p', '--parents', action='store_true', required=False, help='no error if existing, make parent directories as needed')
+    parser.add_argument('dir', action='store', nargs='+')
+    ns = parser.parse_args()
+    for p in ns.dir:
+        pathlib.Path(p).mkdir(parents=ns.parents, exist_ok=True)
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main())