forward refs just make this idea messy.  Maybe yacc isn't such a
bad idea.  Or pylex.
Merge branch 'master' of github.com:cambridgehackers/connectal
Change mkClockIBUFDS to the Connectal variant
convert signalling to connectal
add adc_reset to mkDWire
fix direction of dco wires to be input
Merge branch 'master' of github.com:cambridgehackers/connectal