Advisories for Pypi/Freewvs package

In freewvs, a directory structure of more than nested directories can interrupt a freewvs scan due to Python's recursion limit and os.walk(). This can be problematic in a case where an administrator scans the dirs of potentially untrusted users.

In freewvs, a user could create a large file that freewvs will try to read, which will terminate the scan process.