[krbdev.mit.edu #7888] Error at configure time on AIX 7.1

[Greg Hudson via RT]

That's essentially true.  In 2011 I added back in limited support for 
static-only builds because gcov didn't work with shared libraries at the 
time, but it was never complete.

We only have build system support for AIX 4 and 5.  That's not to say the 
current tree actually builds on AIX 4 and 5, but src/config/shlib.conf 
recognizes them and sets up the correct commands for building shared 
libraries.  It's not clear to me from previous email exchanges whether 
extending the AIX 5 support in shlib.conf to AIX 6 or 7 would be correct.  
We will accept reasonable patches to make krb5 compile on AIX 7, but we 
don't have the resources to develop or test them.