Zc-recipe-cmmi

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- Added to the README.txt file a link to the SVN repository, so that Setuptools
can automatically find the development version when asked to install the
"-dev" version of zc.recipe.cmmi.

- Applied fix for bug 261367 i.e. changed open() of file being downloaded to
binary, so that errors like the following no longer occur under Windows.

uncompress = self.decompress.decompress(buf)
error: Error -3 while decompressing: invalid distance too far back

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Add support to autogen configure files.

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Add support for updating the environment.

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- Check if the ``location`` folder exists before creating it.

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Added support for:

- download-cache: downloaded files are cached in the 'cmmi' subdirectory of
the cache cache keys are hashes of the url that the file was downloaded from
cache information recorded in the cache.ini file within each directory

- offline mode: cmmi will not go online if the package is not in the cache

- variable location: build files other than in the parts directory if required

- additional logging/output

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- Added support for patches.

- Tests fixed (buildout's output changed)