py3: use pycompat.bytestr() to convert str into bytes the keys of opts are str here, so we have to convert it to bytes before passing into error.Abort() Differential Revision: https://phab.mercurial-scm.org/D3617

py3: fix kwargs handling in hgext/rebase.py We add r'' prefixes to prevent the transformer adding b'' prefixes. # skip-blame because just r'' prefixes Differential Revision: https://phab.mercurial-scm.org/D3616

hgweb: wrap {entries}* of tags with mappinggenerator They were functions returning a generator of mappings. The laziness is handled by the mappinggenerator class.