Bugzilla bug 223427: added a note section so that the linker knows we are

not executing off the stack.  This patch is received from Christopher
Blizzard of Red Hat <blizzard@redhat.com>.

nsprpub/pr/src/md/unix/os_Linux_x86.s

@@ -109,3 +109,6 @@ _PR_x86_AtomicAdd:
     xaddl %eax, (%ecx)
     addl %edx, %eax
     ret
+
+/ Magic indicating no need for an executable stack
+.section .note.GNU-stack, "", @progbits ; .previous