Log Message:
Bump the version 2.3.4 to 2.4.1

See Release note found at 
  doc/en/release-notes/bzr-2.4.txt
  doc/en/release-notes/bzr-2.3.txt
For detail, thanks,

bzr 2.4.1
#########

:2.4.1: 2011-09-08
Bug Fixes
*********
* ``config.LocationMatcher`` properly excludes unrelated sections.
  (Vincent Ladeuil, #829237)

* ``dirstate.fdatasync`` and ``repository.fdatasync`` can now properly be
  disabled. (Vincent Ladeuil, #824513)

* Disable ``os.fsync`` and ``os.fdatasync`` by default when running
  ``bzr selftest``. You can use ``--sync`` to re-enable them.
  (John Arbash Meinel, #837293)

* Fix i18n use when no environment variables are set. (Jelmer Vernooij, #810701)

* Avoid UnicodeDecode error when reporting EINVAL from transports.
  (IWATA Hidetaka, #829237)

bzr 2.4.0
#########

:2.4.0: 2011-08-11

This release marks the start of a new long-term-stable series. From here, we
will only make bugfix releases on the 2.4 series (2.4.1, etc, and support it
until February 2013), while 2.5 will become our new development series.

This is a bugfix and polish release over the 2.3 series, with a large number
of bugs fixed (>150 for the 2.4 series alone), and some performance
improvements. Support for python 2.4 and 2.5 has been dropped, many large
working tree operations have been optimized as well as some stacked branches
operations.

Only bugfixes from other stables series have been included since 2.4b5 so
all known fixed bugs are included here.

Users are encouraged to upgrade from the other stable series.