plt/racket — pull request #852 by juanfra684 (2014-12-18 16:29:09+00:00)
Title: Add various changes to sconfig and configure.

- Modify the features used by OpenBSD (not everything was
tested). Mostly copied from Linux, FreeBSD and NetBSD.
- Add support for Bitrig, a fork of OpenBSD. They uses clang
instead of gcc.
- Typos and extra trailing spaces.