[Darwin, libsanitizer] Default to no sanitizer for Darwin <= 10

Darwin10 is no longer supported upstream and will not build without
additional patches.

libsanitizer/configure.tgt

@@ -60,7 +60,7 @@ case "${target}" in
 		TSAN_TARGET_DEPENDENT_OBJECTS=tsan_rtl_aarch64.lo
 	fi
 	;;
-  x86_64-*-darwin[1]* | i?86-*-darwin[1]*)
+  x86_64-*-darwin1[1-9]* | i?86-*-darwin1[1-9]*)
 	TSAN_SUPPORTED=no
 	;;
   x86_64-*-solaris2.11* | i?86-*-solaris2.11*)