Products.i18ntestcase

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- Lower-cased package name, to conform to Zope3/Python style
[hannosch]

- Fixed an issue with getPoFiles not being strict enough on product
matching, resulting in plonelanguagetool po's found for the plone product
[hannosch]

- Move to new default comments (. Default: "") instead of old original
comments ( Original: "").
[hannosch]

- Adopted syntax for i18ndude 2.0. From this point forward i18ndude 1.x
is not supported anymore.
[hannosch]

- Optimized slightly for speed (approx. 5% faster)
[hannosch]

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- Got rid of a bunch of external binary dependencies by replacing the
testNoDuplicateMsgId() test by the Python-only version taken from CPS.
[hannosch]

- Reordered the "if __name__ == '__main__':" magic calls in a way that
calling the test_i18n.py script directly also works.
[hannosch]

[hannosch]