[binutils-gdb] sim: sh: convert to nrun

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT 62454d3da2aaabb266e49a4ba22948484e91edc1 ***

Author: Mike Frysinger <vapier@gentoo.org>
Branch: master
Commit: 62454d3da2aaabb266e49a4ba22948484e91edc1

sim: sh: convert to nrun
A lot of cpu state is stored in global variables, as is memory handling.
The sim_size support needs unwinding at some point.  But at least this
is an improvement on the status quo.