YAP change log

# Changes in YAP-5.0

## Yap-5.0.2:

- FIXED: excessive backtracking in multifile declaration.
- FIXED: broken do_print_message for defined_elsewhere.
- FIXED: debugger option.
- FIXED: trace through undefined predicates correctly.

## Yap-5.0.1:

- FIXED: WIN32 missing include files (untested)
- FIXED: -L trouble (my thanks to Takeyuchi Shiramoto-san)!
- FIXED: debugging of backtrable user-C preds would core dump.
- FIXED: redeclaring a C-predicate as Prolog core dumps.
- FIXED: badly protected YapInterface.h.
- FIXED: break/0 was failing at exit.
- FIXED: YAP_cut_fail and YAP_cut_succeed were different from manual.
- FIXED: tracing through data-bases could core dump.
- FIXED: cut could break on very large computations.
- FIXED: first pass at BigNum issues (reported by Roberto).
- FIXED: debugger could get go awol after fail port.
- FIXED: weird message on wrong debugger option.