Difference between bzr-1.1.tar.gz and bzr branch lp:bzr/1.1

Which / where is the branch which contains exactly the official 1.1 release?

From my shell (Ubuntu 6.06):

mueller@dhcppc4:~$ bzr branch lp:bzr/1.1
bzr-gtk is not up to date with installed bzr version 1.0.0.candidate.1.
There should be a newer version available, e.g. 1.0.
Unable to load plugin 'gtk' from '/home/mueller/.bazaar/plugins'
lp:bzr/1.1 is redirected to http://bazaar.launchpad.net/~mbp/bzr/bzr.1.1/

Branched 3171 revision(s).
mueller@dhcppc4:~$ mkdir bzr
mueller@dhcppc4:~$ mv 1.1 bzr
mueller@dhcppc4:~$ tar xzf bzr-1.1.tar.gz
mueller@dhcppc4:~$ diff -r bzr-1.1 bzr/1.1/|more
Nur in bzr/1.1/: .bzr.
Nur in bzr/1.1/: .bzrignore.
Nur in bzr-1.1/bzrlib: _dirstate_helpers_c.c.
Nur in bzr-1.1/bzrlib: _knit_load_data_c.c.
diff -r bzr-1.1/bzrlib/repofmt/pack_repo.py bzr/1.1/bzrlib/repofmt/pack_repo.py
1651,1653c1651,1654
< self._new_pack.abort()
< self._remove_pack_indices(self._new_pack)
< self._new_pack = None
---
> if self._new_pack is not None:
> self._new_pack.abort()
> self._remove_pack_indices(self._new_pack)
> self._new_pack = None
diff -r bzr-1.1/bzrlib/tests/TestUtil.py bzr/1.1/bzrlib/tests/TestUtil.py
79a80,81
> # Memoize test names by test class dict
> test_func_names = {}
124a127,136
> def getTestCaseNames(self, test_case_class):
> test_fn_names = self.test_func_names.get(test_case_class, None)
> if test_fn_names is not None:
> # We already calculate that
> return test_fn_names
>
> test_fn_names = unittest.TestLoader.getTestCaseNames(self,
> test_case_class)
> self.test_func_names[test_case_class] = test_fn_names
> return test_fn_names
diff -r bzr-1.1/NEWS bzr/1.1/NEWS
71a72,74
> * Avoid AttributeError when unlocking a pack repository when an error occurs.
> (Martin Pool, #180208)
>
160a164,166
> * Reduce selftest overhead to establish test names by memoization.
> (Vincent Ladeuil)
>
diff -r bzr-1.1/README bzr/1.1/README
29c29
< * Easy to use and intuitive.
---
> * Easy to use and intuitive.
31,33c31,33
< Only five commands are needed to do all basic operations, and all
< commands have documentation accessible via 'bzr help command'.
< Bazaar's interface is also easy to learn for CVS and Subversion users.
---
> Only five commands are needed to do all basic operations, and all
> commands have documentation accessible via 'bzr help command'.
> Bazaar's interface is also easy to learn for CVS and Subversion users.
35c35
< * Robust and reliable.
---
> * Robust and reliable.
37,39c37,39
< Bazaar is developed under an extensive test suite. Branches can be
< checked and verified for integrity at any time, and revisions can be
< signed with PGP/GnuPG.
---
> Bazaar is developed under an extensive test suite. Branches can be
> checked and verified for integrity at any time, and revisions can be
> signed with PGP/GnuPG.
60,61c60,61
< Changes will never be merged more than once, conflicts will be
< minimized, and identical changes are dealt with well.
---
> Changes will never be merged more than once, conflicts will be
> minimized, and identical changes are dealt with well.
mueller@dhcppc4:~$