Quote filenames sent to /usr/bin/file
Quote filenames sent to /usr/bin/file

99.99% of installed files don't have spaces in them, but not all.
During test mode, every file is run through /usr/bin/file to look for
dynamically linked libraries.  On devel/py-setuptools27, an error
would seep into stdout due to a filename with spaces in it.  Quoting
the filename fixes this minor bug.

Reported and diagnosed by: zrj

jrmarino/synth,jrmarino/synth,jrmarino/synth,jrmarino/synth