-* new section in ours.wiring for breaking up S0 S1 S2 S3 into
- P0Q0V0R0 et al.
-
-* data2safety reads that and computes most things to have the
- exploded version; the exception is layout-data.c SegPosCombInfo.pname
* movpos.c needs to be modified to cope with mixed MovPosChanges
split MovPosChange into two structs, Change which is per-method