XSB Src (SVN)-old

Use write_canonical_lettervar to make sotred cdf_extensional (and int) files
more consistent and not change with random variable numbers.
And improve indexing for hasAttr_ext.

updated manuals' pdfs, the windows banners

Added missing declaration of a new external function: alt_print_cp

Test for copy_term_nat/2

Code for copy_term_nat/2.

Added copy_term_nat/2 (but still to be tested).

Had to get rid of inline builtins for print stack statements.

Moved print stacks from main set of builtins to table_inspection primitivies

Changes to move some engine debugging builtins out of main set of
builtins, and into table_insepection builtins.

Documented total_memory and trie_asserted keys for statistics/2.