Revert "In case of anonymous client principal, use the realm of the server"

Revert "In case of anonymous client principal, use the realm of the server"

This reverts commit 34d2748e9052debc6a061911c2c786b46507b531.  As the
entire working group has apparently forgotten, the KDC-REQ body only
has one realm field.  That's used in an AS REQ for both the server and
client realm .  So, in the anonymous pkinit case, I think we want to
send using a client of WELLKNOWN/ANONYMOUS@REAL_REALM.  Waiting to
hear back from the WG on this.

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/anonymous@23491 dc483132-0cff-0310-8789-dd5450dbe970