sim: tests: get common tests working again

These were written with 32-bit host assumptions baked into it.
Simplify the printf formats to use ll length modifier as it's
in C11 rather than trying to manually break it up into two,
and cleanup some of the casts to stop assuming sizeof(long) is
the same as sizeof(int).

We also have to add a few more includes for the various funcs
used in here.

The tests aren't compiled automatically still.  We can figure
that out later with more work.