bring or1ksim up to speed

The commits here:

1. change or1ksim to use the new or1k architecture instead of or32
2. add no-delay-slot support to or1ksim, including to the testsuite
3. fix a few bugs/warnings
4. regenerate all the autoconf/automake stuff.

I did a make distcheck, the full testsuite works on both or1k and or1knd modes.