Plone.recipe.alltests

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Bug fixes:


- Minor packaging updates. (1)

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Fixes:

- Fix imports when buildout was installed using pip.
[davisagli]

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- Do not fail if path for a package can not be found.
[timo]

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- Flush stdout after printing status before and after running tests.

- Added ``exclude-groups`` and ``include-groups`` so entire package groups
can be easily included or excluded from the test run.

- Added the ``default-policy`` setting which makes it possible to exclude
packages by default, unless explicitly listed in ``include``.

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- Make it possible to run a single test group by specifying the --group= option.
This can aid with debugging test isolation problems.
[davisagli]

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- Refactor test summary somewhat to make it easier to parse.
[hannosch]

- Exclude ``distribute`` by default from the test runs. Clarify that we always
run tests for all dependencies of the packages listed in the eggs option.
[hannosch]