or1k-ovcy test: fix bug, comment pitfalls
or1k-ov test: remove unsigned multiply test code
or1k-cy test: add test for carry support
pronto espresso: update sim Makefile

Add some new tests.

Add a check to determine if we're running the RTL tests, if so then only include the debug unit tests
or1k-cy test: fix some bugs
or1k-ov test: remove unsigned multiply stuff
mor1kx monitor: fix disassembly l.mulu instruction
mor1kx espresso: change multiplier default to serial so CY tests pass