progress on Sample 2

I've started working on converting sample2 to using a RoleML script. Progress is still slow.

The resolve opcode is now working, including rolon-relative pathnames. This is used to navigate within the database.

The code for creating all the different kinds of Entities is in place, but still isn't working. Needs just a bit more effort.

I still need to work on the reordering opcodes. But this shouldn't take long. I now expect to have sample 2 done tomorrow.