[ZODB-Dev] ZEO server leaks FDs.

[Jeremy Hylton]

Can this error be reproduced without ZEO?  I can't imagine that ZEO
does anything particularly unusual.  On the other hand, I wouldn't be
too surprised if there was some GC bug in ExtensionClass or ZODB.

Can't recall any good techniques for debugging GC problems.  (Neil?)
The fact that the SEGV is in the gc code is not at all surprising.  It
tends to tickle pointer bugs that might otherwise go unnoticed.

Jeremy