svnrepo: preserve and forward createopts kwarg This patch adds some if-elses to make sure we don't pass intent or createopts to a httppeer.instance() which does not know about that i.e. we don't pass them when hg is old.

include Makefile hgsubversion/help/*.rst tests/fixtures/invalid_utf8.tar.gz
recursive-include tests *.py *.sh *.svndump *.txt