Checkoutmanager

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- Added ``--force-interactive`` to ``svn info`` for svn version 1.8
and higher. This is for the "hidden" ``instancemanager info``
command that is handy for updating your repositories when you've
switched svn versions. (See the changelog entry for 1.10). Patch by
Maurits.

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- Not using the sample config file as the test config file anymore. This means
there's a much nicer and more useful sample config file now.

(Thanks Craig Blaszczyk for his pull request that was the basis for this!)

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- For bzr, the "out" command uses the exit code instead of the command output
now. This is more reliable and comfortable. Fix by Jendrik Seipp, thanks!

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- Allow more than one vcs in a directory. This was already possible
before, but now known you no longer need to list all the checkouts
of the competing vcs in the ignore option. Also, items that are
ignored in one section are now also ignored in other sections for
the same directory.
Fixes 11.
[maurits]

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- Using --mine-only option to ``bzr missing`` to only show our outgoing
changesets when running checkoutmanager's "out" command for bzr.

- Copying sample .cfg file if it doesn't exist instead of only suggesting the
copy. Fixes 12.

- Added hidden info command. Should be only useful for subversion if
your svn program is updated and your OS requires you to give svn
access to your stored credentials again, for each repository.
[maurits]

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- Added ``upgrade`` command that upgrades your subversion checkouts to
the new 1.7 layout of the ``.svn`` directory.
[maurits]