py3: open temporary file in binary mode Otherwise things fail later when we write bytes to the handle. Differential Revision: https://phab.mercurial-scm.org/D2148

py3: use email parser that operates on bytes email.parser.Parser() operates on str in both Python 2 and 3. Python 3.2 introduced the email.parser.BytesParser(), which works like Parser except it accepts bytes. We implement the pycompat helper as a function so we lazily import the "email" module. Differential Revision: https://phab.mercurial-scm.org/D2147

py3: port ext-phase-report.py extension The custom module importer doesn't run on Python files in the tests directory. So we need the source to be compatible with both Python 2 and 3. Differential Revision: https://phab.mercurial-scm.org/D2145

py3: more robustly cast UUID to bytes The UUID type only has __str__ implemented. So we need to cast to bytes on Python 3. We need an actual bytes instance here (bytestr won't do) because the re.escape() later iterates over characters and characters need to behave like ints, not bytes instances of length 1. Differential Revision: https://phab.mercurial-scm.org/D2144

py3: use bytes() to cast context instances __str__ and __bytes__ are both implemented on context types. However, __str__ behaves differently on Python 2 and 3. Differential Revision: https://phab.mercurial-scm.org/D2143

py3: convert __doc__ to bytes Differential Revision: https://phab.mercurial-scm.org/D2142

py3: cast repr() result to bytes Differential Revision: https://phab.mercurial-scm.org/D2141

py3: fix file i/o in test-status.t Use raw string literal for open() mode and pass the proper data type to write(). Differential Revision: https://phab.mercurial-scm.org/D2140