second FIPS patch for openssh 6.0p1, fix pubkey

[Schaaf, Jonathan P (GE Healthcare)]

> The patch to enable FIPS mode for openssh 6.0p1 missed two instances of the ssh client trying to use MD5.

I assume you're talking about the patch I posted.  My patch had another mistake... there's a third place with the same issue, in ssh-agent.c 

I've updated the patch and reposted it at the same location:
http://jpschaaf.com/stuff/openssh-6.0p1-fips.diff

Comments are always appreciated...  Particularly if anyone knows what the "right way" is to handle the case where cipher is NULL in authfile.c

Jonathan