Add "fakie" interpreter.  Add $:equal to support it.
'Fakie' enough to interpret zeroes.tamsin.  I think.
Implement $:equal in the compiler.  All tests pass.
It's no longer a fake interp; it can pass the first 30 tests!

--HG--
rename : eg/tamsin-fakie-interpreter.tamsin => eg/tamsin-micro-interpreter.tamsin