Fix 1698398:  Zipfile.printdir() crashed because the format string expected a tuple object of length six instead of a time.struct_time object.

Now that I've learnt about structseq objects I felt like converting sys.float_info to a structseq. It's
readonly and help(sys.float_info) explains the attributes nicely.

Added new an better structseq representation. E.g. repr(time.gmtime(0)) now returns 'time.struct_time(tm_year=1970, tm_mon=1, tm_mday=1, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=3, tm_yday=1, tm_isdst=0)' instead of '(1970, 1, 1, 0, 0, 0, 3, 1, 0)'. The feature is part of #1816: sys.flags

Slots inheritance is very different from OO inheritance.
This code lead to infinite recursion on classes derived from StructType.

now that ctypes uses a more supported method to create types:

Method cache optimization, by Armin Rigo, ported to 2.6 by Kevin Jacobs.

ctypes takes some liberties when creating python types: it modifies the types'
__dict__ directly, bypassing all the machinery of type objects which deal with
special methods.  And this broke recent optimisations of method lookup.
Now we try to modify the type with more "official" functions.

#1550: help('modules') broken by several 3rd party libraries.

Tested with Python build: trunk:54235:59936M -- the reported error
occurs with Django installed (or with any __init__.py present on
the path that raises an exception), and such errors indeed go away
when this change is applied.

2.6 by Kevin Jacobs.

from os docs, rework posix docs.

when constructing from a string. Disallow trailing newlines in
Context.create_decimal.

NULL may be a valid return value from PyLong_AsVoidPtr.

Will backport to release25-maint.

function pointer is called.

Will backport to release25-maint.

  The sqlite3 dll, when compiled in debug mode, must be linked with
  /MDd to use the debug runtime library.  Further, the dll will be
  named sqlite3_d.dll.

to use the debug runtime library.  Further, the dll will be named
sqlite3_d.dll.