IP: canonical rep of blank-configs and prelim manipulations
IP: canonical stuff
IP: more canonicalization and expand*
IP: stopped duplicates in *spaceindex*
IP: debug expand* and generate-and-write-new-pos
Canonical Index Working for Block10 and Climb12
index pt-loc as bytestring and store ebmses as rcbytes
ebms as 5-byte string
hc-positions stored now with canonical blank-configs
prevent invalid pairs going to rcpair->rcbyte