XSB Src (SVN)-old

Fix bug in retracting clauses with atomic bodies.

Fixed bug in listing/1 for atoms.

Yet another try to fully support *dynamic* aggregate predicates.

Added 'hook' to allow dynamic predicate to be 'renamed'.

Added catch in read_term to clean up global flags in case of error.

Fixed bug in handling dynamic aggregate predicates.

Fix implementation of read_term option of variables_as_atoms to use tokenizer flags.

Add flag to allow tokenizer to return vars as atoms.

Added option to read_term to read double-quoted strings as atoms.

Add flag to tell tokenizer to return double-quoted strings as atoms.