rst: Make has_cjk() Python 3 compatible.
rst: Make has_cjk() Python 3 compatible.

In Python 3, iterators no longer have a next() method: it has been renamed to
__next__(). This could be worked around by using the builtin function next(),
but a simpler fix is to just use the regex' object search() method instead of
finditer().

ehoffmann/snipmate-snippets