These source files as all specific to Unix environments (not, however,
OS X) and are not "generic" (i.e. used across all platforms).

Change-Id: I6008a272c4b961a12702e2ef8727c56df9e80164
Reviewed-on: https://gerrit.libreoffice.org/21334Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>