[devtools/testlib] Port CubicWebTC.view() to py3k testlib.TestCase.set_description's argument will eventually be printed out to sys.stdout/stderr. On python 2, this object takes bytes-like objects (eg, str) whereas python 3's takes unicode-like objects and handles the encoding on its own. Thus the 'str' type can used in both versions to eventually display the description on screen.

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usr/bin/cubicweb-ctl usr/bin/

     2

usr/lib/python2*/*-packages/cubicweb/cwctl.py

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../cubicweb-ctl.bash_completion etc/bash_completion.d/cubicweb-ctl