Strace port to SuperH SH5

[Roland McGrath]

I have just put in the changes by Stuart Menefy <stuart.menefy at st.com> to
update the SH support.  This will shortly be in a 4.4.96 test release.
Stuart's changes addressed the -f behavior.  Please reconcile the new code
in CVS with whatever changes you have and send in any remaining fixes you have.

The new setbpt/clearbpt code indeed works by just changing the registers
that give the system call number and arguments to force a clone call using
CLONE_PTRACE.  You don't need to worry about how that works in the kernel
per se, just that the new code is correctly accessing the registers used
for system call arguments.


Thanks,
Roland