[OpenAFS] some older openafs-client versions have started failing

[Chad William Seys]

Hi Ben,

The Scientific Linux clients are using patched (by Redhat) 2.6.32 and 
the Debian clients are using patched (by Debian) 3.2.78 and 3.16.7 .

Do you suspect that a recent security patch, applied to all three 
kernels, could have broken the older AFS clients?

I could certainly test this idea if it appears promising.  I guess I'd 
start with the server's kernel though: One data point that argues 
against it being the client's kernel is that for the Scientific Linux 
box I booted up an machine which had not been updated for a long time 
(kernel dated Mar 22, 2016) and compiled openafs 1.6.15 (not functional) 
and 1.6.16 (functional).

Chad.