scripts: crc32c.py/parity.py: Show string with -s/--string

This matches the behavior of paths and helps figure out which string is
associated with which crc32c/parity when checksumming multiple strings:

  $ ./scripts/crc32c.py -s hi hello
  f59dd9c2  hi
  9a71bb4c  hello

It also might help clear up confusion if someone forgets to quote a
string with spaces inside it.

scripts/crc32c.py

@@ -47,7 +47,7 @@ def main(paths, **args):
     # interpret as strings
     elif args.get('string'):
         for path in paths:
-            print('%08x' % crc32c(path.encode('utf8')))
+            print('%08x  %s' % (crc32c(path.encode('utf8')), path))
 
     # default to interpreting as paths
     else: