Adapted patch from Jason Rogers.  It wasn't complete, so this commit
fixes the other instances of the 64-bit problem.

Also fix krb5_deltat_to_str(), which would previously always return an
empty string.

https://github.com/krb5/krb5/commit/33fcef6a991d5697a9e2fa0c52d30349c1e88789
Commit By: tlyu
Revision: 23928
Changed Files:
U   trunk/src/lib/krb5/krb/str_conv.c
U   trunk/src/slave/kproplog.c