XSB Src (SVN)-old

table maintenance.) It now uses XSB mem_alloc and friends, and there is a new
space type of INCR_TABLE_SPACE. It is included in SLG Table space in statistics
and is also broken out (if nonzero).
And doing that showed a huge amount of unused space due to many large hashtables
when there's only one edge. So I changed the minimum size of initial hashtables
(they are automatically expanded if necessary.) [It reduced incr space usage in
my DSS example from about 340M to 8M... much!! better.]