[PATCH] Fix compiler-rt build on FreeBSD 10.1

[Alexey Samsonov]

Adding eugenis just in case. The change looks fine to me.

================
Comment at: lib/sanitizer_common/sanitizer_platform_limits_posix.cc:17
@@ -16,1 +16,3 @@
 #include "sanitizer_platform.h"
+#if SANITIZER_FREEBSD
+#define _WANT_RTENTRY
----------------
Could you move this below

  #if SANITIZER_LINUX || SANITIZER_FREEBSD || SANITIZER_MAC

line?

http://reviews.llvm.org/D5703