am 722a5c04: Add support for "standalone months" to tztime\'s strftime().

Merge commit '722a5c0462f38827f4097065bfc3826b9e0e9fb4'

* commit '722a5c0462f38827f4097065bfc3826b9e0e9fb4':
  Add support for "standalone months" to tztime's strftime().