[racket-dev] bit-vectors and serialization

I'd like to make bit-vectors serializable so I can replace sql-bits with 
them. I'll deprecate the current sql-bits names but keep them around for 
a while.

The issue is that bit-vectors are implemented using fxvectors, which are 
serializable, but simply serializing them will presumably cause errors 
if a bit-vector is serialized on a 64-bit machine and deserialized on a 
32-bit machine or vice versa.

One solution would be to use bytes instead of fxvectors. The performance 
is about the same as far as I could tell using the sieve benchmark.

Another option is to declare that serialization across word sizes 
doesn't work for bit vectors.

Any opinions?

Ryan