This change implements a new bytecode compiler, based on a
transformation of the parse tree to an abstract syntax defined in
Parser/Python.asdl.

The compiler implementation is not complete, but it is in stable
enough shape to run the entire test suite excepting two disabled
tests.

type lookups: whitespace and linebreak.

These lookup tables are from the Python 1.6 version with the addition
of the 205F code point which was added as whitespace code point to Unicode
since then.

Problem: if two files are assigned the same inode
number by the filesystem, the second one will be added
as a hardlink to the first, which means that the
content will be lost.

The patched code checks if the file's st_nlink is
greater 1. So only for files that actually have several
links pointing to them hardlinks will be created, which
is what GNU tar does.

Will backport.

Backport candidate.

Optimised Placeholders handling of child loggers by using a dict rather than a list (much slower in the pathological case of hundreds of child Loggers to a Placeholder - problem reported by Ryan Blazecka).

by RFC 1642.

browser controller classes.

but verify_valid_flag() wasn't expecting that.  Will backport.

PyUnicode_DecodeCharmap() the accept a unicode string as the mapping
argument which is used as a mapping table.

This code isn't used by any of the codecs yet.

from U+FFFD to U+FFFE which is considered more appropriate.  (from
MAL's comment)

which can't be compiled.  Thanks to Mat Martineau for spotting the problem.

open_new_win does not exist.  use UNIX consistently, add autoraise parameter to open().  add versionadded tags to open_new_tab