XSB Src (SVN)-old

Fixed assert to correctly transform clause like
execute(X) :- X.
and add the call wrapper correctly.

Preliminary version of abstraction for dynamic incremental predicates.

allow xsb_configuration.xwam without the corresponding .P file

Exporting filter_varlist/4.

Added coercion to quiet MSVC compiler.

Fixed problem in using get_residual_sccs for uncondtional answers.

Commented out ensure_loaded(xsbbrat) -- the tests should also test that xsbbrat is loaded, come what may.

Fixes to ensure that various undefineds are always loaded, and
regularized how they are loaded. This fixes a problem encountered by
Flora, and some refactoring makes it easier to add new types of
undefineds.

in gpp, make it work with forward slashes in the file paths under windows.

Fixed bug (uncovered by valgrind) in pointer chasing for ISO incremental tabling.