A RPC patch for glibc

[Philip Blundell]

>This patch tries to fix it. When there is a timeout in RPC, it checks
>if there is any network interface up. If not, it returns immediately.

Ugh.  Is there not some way we can check for failure to transmit the RPC 
request instead?  If no network is up we should get "network is unreachable" 
or some similar error return, and the code ought to notice that no request was 
actually sent and not hang around waiting for a reply.

p.