audio/oss: update to 4.2.b2017 (maintenance release)
- Add a note about origin to avoid users from Linux blaming FreeBSD for 4Front's bugs and vice versa
- Disable SSE on amd64 to avoid kernel panic[1]
Changes: http://opensound.com/forum/viewtopic.php?f=19&t=5841
PR: 212263
Submitted by: Jakub Adler <jakubadler@gmail.com> [1]
MFH: 2017Q1