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: Idba1e9bbe14d8a4bb8e5dd2c2ad1dc75458da53c
Reviewed-on: https://gerrit.libreoffice.org/21335Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Chris Sherlock <chris.sherlock79@gmail.com>