Backport r464959 | gerald | 2018-03-18 22:24:42 from emulators/wine-devel:

Fully disable building Kerberos components.

We already had --without-krb5, alas when someone had krb5 installed
in their build environment, the build still failed. This takes care
using a bigger hammer.

PR: 226396
Analyzed by: John Hein <z7dr6ut7gs@snkmail.com>