twisted.python.test.test_release should be marked as cpython-only

New submission from fijal <None>:

because it imports random stuff from distutils, like customize_compiler. It should be either
entirely skipped, or release procedure should reflect that there might be no possibility to
build cpython extension modules.

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Type     : enhancement
Component: core
Keywords : 
Priority : normal
Nosy     : 
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http://twistedmatrix.com/trac/ticket/3789