XSB Src (SVN)-old

Fix to answer subsumption transformation to support attributed variables.

Minor (possible) performance enhancement to variant.

updated upload info

local readme 4 windows

updated files for creating windows binaries

Minor change to initial allocation of data structures. Better when not using interned structures.

Fixed rename on Windows so it doesn't delete if renamed to self.

Clear first chunk when it would have been freed, so gc does mark its now-irrelevant structures.

Clear a chunck when it is re-used. Found and fixed by Ed Schwartz.

Added code to reuse freed-up space in previous, smaller hash tables.