amd64 build failed: constructor priorities from 0 to 100 are reserved

[Thomas Klausner <wiz%NetBSD.org@localhost>]

With a cvs checkout from about an our ago, an amd64 build failed for
me:

--- dependall-safestack-m32 ---
/usr/src/sys/external/bsd/compiler_rt/dist/lib/safestack/safestack.cc:271:23: error: constructor priorities from 0 to 100 are reserved for the implementation [-Werror]
 void __safestack_init() {
                       ^


 Thomas