by RFC 1642.

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.

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

SF patch #1227568, bug #1219273, Expression AST node not documented.  Backport candidate if anyone cares.

SF #1297059, doc incorrect return type for search() method.  (There is a description of returned values at the top, so just remove the sentance and correct an example.)

(forward port revision 1.10.4.1)

exec statements; people coming from certain other languages seem to be
confused by this on a regular basis

- fix several consistency nits relating to \method{...()}

- Unify function description mode ("Return X" vs "Returns X")