Emit .note.GNU-stack for the syscall stubs generated by libc only on architectures that support this .note. In particular, do not unneccessary emit the notes on ia64 and sparc64, which ABI require non-executable stacks.
Emit .note.GNU-stack for the syscall stubs generated by libc only on
architectures that support this .note. In particular, do not unneccessary
emit the notes on ia64 and sparc64, which ABI require non-executable stacks.

Tested by:	marcel

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase