XSB Src (SVN)-old

A couple of little changes that I just had to make once I started looking at the manual.

Documentation for split_atom/3.

split_atom/3, a la Python split.

Clarified what is either a debug message or a very obscure user warning.

Making a test that depends on gensym more stable.

Took off the 'privatizer' for byte-code filenames for all (I hope) messages.

Rename private xwam if command throws an error on load; add a cut to a first efficiency clause in subsumes/2.

Updates for incremental, subsumptive tabling.

Now calling subsumptive, incremental tests.

Changes to a new test for proper handling of conditional answers with subsumption.