[PATCH] Allow initialization of Asan interceptors before the general Asan initialization takes place on FreeBSD

[Kostya Serebryany]

LGTM with one small nit

================
Comment at: lib/sanitizer_common/sanitizer_common_interceptors.inc:95
@@ +94,3 @@
+#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED \
+  (0)
+#endif
----------------
why new line?

http://reviews.llvm.org/D4496