Update facts.py

Fixes #7093 --devel
Merge pull request #7099 from faust64/patch-2

Update facts.py
should now work with versions older than 8.4
Merge pull request #7108 from bcoca/freebsd_mtu_fix

should now work with versions older than 8.4
Set the default LANG to en_US.UTF-8 and also set LC_CTYPE

Fixes #6737