Fix for legacy build issue with LLd
Merge branch 'bleeding-jumbo' of git://github.com/magnumripper/JohnTheRipper into bleeding-jumbo
Revert to a somewhat safer krb5 test (hopefully working for MIT
as well as Heimdal now). If we do not even have the krb5_is_thread_safe()
function, disable OpenMP for krb5-18/23 formats to be safe.
Don't try to use HAVE_LIBKRB5 as an aggregate - create a new one.