Added start on space-index approach to finding successors.
converted output to hash
spaceindex hash stores pointers to old compiled moveschemas
added expand* to stp-spaceindex to use the index created there
searches with expand* finds solution but longer path
minor changes toward inner-search during expansion
minor changes toward inner-search
small progress on the inner-search
spaceindex works
added cached spaceindex files in stpconfigs directory
removed blank-prereqs and new-piece-position from the EBMS
change hasheq to hash for the 32-bit cluster
change name from can-move to can-move?
replaced blank-change-bits with new-blank-bits
double hash space-index
fixing bloat in double-hash approach
Space Index and Cleanup

Removed the double-hash strategy from spaceindex.  Now a space(blank) configuration
indexes a vector of vector of EBMSes.

Also did some clean up with files.  Remove all newlines to save a 20th of the space (for CP24).
Replaced fprintf with write-bytes which will not need to check on formatting.  Since fringe files
no longer have newlines, had to also change the position counting functionality.
Merge branch 'spaceindex' into savetodisk
resolved minor conflicts in stp-solve-cluster and made minor documentation changes to stp-spaceindex.
Everything else merged without incident.

Conflicts:
	stp-solve-cluster.rkt