py3: use "%d" for integers instead of "%s"
util.parsedate() returns a tuple of integers. Writing this patch, I wish we had
some type hinting.
Differential Revision: https://phab.mercurial-scm.org/D2412
py3: use pycompat.byteskwargs() to fix keyword arguments handling
I missed these when I fixed keyword arguments handling in the whole file.
Differential Revision: https://phab.mercurial-scm.org/D2410