[PATCH] Fix getting IP, BP and SP for address sanitizer's needs on FreeBSD in 32-bit mode

[Ed Maste]

And please continue to submit bugs for any of these issues that you find.

The canonical URL for a FreeBSD bug is of the form https://bugs.freebsd.org/<number> - e.g., https://bugs.freebsd.org/186958 .  The canonical URL will always redirect to the right place; we have just migrated from Gnats to Bugzilla.

http://reviews.llvm.org/D3936