py3: use open() instead of file() file() is not present in Python 3 Differential Revision: https://phab.mercurial-scm.org/D2044

py3: use pycompat.strkwargs() to convert kwargs' key to str Differential Revision: https://phab.mercurial-scm.org/D2043

py3: add __bytes__() for mq.patchheader and make sure __str__ returns str Before this patch, __str__() function for mq.patchheader class return bytes which is not str on Python 3. So let's move that logic to __bytes__() and for __str__() convert the return value of __bytes__() to str. Differential Revision: https://phab.mercurial-scm.org/D2042

py3: use "%d" to convert integer to bytes Differential Revision: https://phab.mercurial-scm.org/D2041

py3: use .startswith() instead of bytes[0] Differential Revision: https://phab.mercurial-scm.org/D2040

py3: slice on bytes to prevent getting the ascii values Differential Revision: https://phab.mercurial-scm.org/D2039

py3: add r'' to convert keys to keyword arguments to str # skip-blame as we are just adding r'' Differential Revision: https://phab.mercurial-scm.org/D2038

py3: add b'' to tweakdefaults config string The tweakdefaults config string is enclosed inside triple quotes and the transformer does not adds b'' there. # skip-blame because we are just adding b'' Differential Revision: https://phab.mercurial-scm.org/D2037

cmdutil: introduce deprecated aliases c8e2d6ed1f9e moved some objects used by Evolve and hence broke the latest Evolve revision. Next Evolve version will use the new objects when available but introduce deprecated aliases so users using older version of Evolve won't have a broken Evolve extension. Differential Revision: https://phab.mercurial-scm.org/D2023

makefile: remove Ubuntu Yakkety and Zesty docker targets Yakkety (16.10) was supported until 2017-07-20 and Zesty (17.04) was supported until 2018-01-13.