| would it be possible to, in the new names, abbreviate READ as R and
| WRITE as W?
|
| 29 character identifier names ... are a bit long.  (yeah, i know,
| they're only 6 more than they used to be...)

Given that this is supposed to reduce confusion, I'd prefer to lop
off some of the letters at the front rather than the part with 
real significance.  Is BUS_SPACE_BARRIER_W_R obvious as to what
it does?

Eduardo