Workaround broken -s option with Apple gcc 4.0.x on Darwin.

Thanks to Doug Gregor for report and suggested fix.


[SVN r33654]

tools/build

@@ -1 +1 @@
-Subproject commit c0c682196c6ab4b5c7d42864f5ee530470e05481
+Subproject commit aff8de18abd50d3fca7eec1a8e9189a9759f952f