XSB Src (SVN)-old

Changed way to determine whether a goal needs answer-completion. Now
it needs answer completion if it is in an SCC for which simplification
is done (and it's not early-completed.)

Minor changes in answer-completion: use force_truth_value(...,false)
instead of delete_return. It's more direct and should be slightly
more efficient. Use trie_get_return directly to avoid collecting all
answers just to see if there's one.

Changes for answer_completion.
Added predicate answer_completion/2 in tables.P that is called from
c (usually) and does answer completion.

All changes for answer-completion. (Redoes somethat got lost in the
sourceforge media crash.)

Add new tests for answer_completion, and
update right answers for old tests, now that answer completing is being done.

Added missing CTXTc tokens to lines 3287, 3288 and 3307 and striped trailing whitespace.

added MD5 to sha1

Line 1645: eptr needs to be defined if your not using LOCAL_EVAL and trailing whitespaces have been removed.

intptr_t and uintptr_t are guarded by __INTPTR_TYPE__ and __UINTPTR_TYPE__ in OS X, trailing whitespace has been removed.

Added missing CTXTc tokens to lines 3297 and 3298 and by default my editor strips trailing whitespace.