url: more bytes/unicodes fussing in url.py around auth handling
Once again, these methods are a little annoying to handle because they
can get unicodes or bytes depending on who's calling. I think we can
probably clean this up a TON once we can run something like pytype and
do typechecking of our Python, but until then this is going to be the
easy way out. This fixes test-http-bundle1.t.
Differential Revision: https://phab.mercurial-scm.org/D2599
$ hg init
$ echo a > a
$ hg ci -Am t
adding a
$ hg mv a b
$ hg ci -Am t1
$ hg debugrename b
b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
$ hg mv b a
$ hg ci -Am t2
$ hg debugrename a
a renamed from b:37d9b5d994eab34eda9c16b195ace52c7b129980
$ hg debugrename --rev 1 b
b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3