XSB Src (SVN)-old

Somehow I forgot this one.

Fixed an incomprehensible error message, and added a new predicate to find the module of a term and format the term with the module for errors and debugging.

Forgot to add this earlier.

Fixed table abolishes for table_indexed predicates. I broke this when I added
a hook for not_exists, but there wasn't a test for it in the test suite. SO I added a test also.

Added a test for tabled answer subsumption executed within a module along with a test of abolishing table_indexed predicates.

Change or error text.

Changed error text.

Change to reflect a change in error text.

Change to reflect a change in an error text.

Forgot to add this test when I added a table abolish hook.