Define new make variable OFFLINE to "no"; if it's set to "yes", skip
the testing of t_locate_kdc, which requires access to mit.edu SRV
records.

https://github.com/krb5/krb5/commit/6089a0b78220a163dd4a2c7fe0f5447933391475
Commit By: raeburn
Revision: 23520
Changed Files:
U   trunk/src/config/pre.in
U   trunk/src/lib/krb5/os/Makefile.in