When the OS locale is not set to C or en_US.UTF-8, the diff files will not be in english.
Therefor

			// Is binary?

			if (preg_match('/^Binary files ' . $package_name . '\/(.*) and [a-z0-9._-]+\/\1 differ/i', $line, $match))

			{

				$binary[] = trim($match[1]);

			}

will not find the binary files and they are missing from the packages.

We should set the locale for the diff command, so they are always english.