Not signing up for bugzilla to report a bug. Sorry.
...
checking whether to use kerberos... yes
checking krb5.h usability... yes
checking krb5.h presence... yes
checking for krb5.h... yes
checking whether the Kerberos library is Heimdal or MIT... no
configure: error: Kerberos not found
MIT Kerberos is installed and found right where I told
configure.
The problem is that you are checking for MIT vs. Heimdal
by the existence of the string "Massachusetts Institute of
Technology" in $krb5_dir/include/krb5.h and it "should" be
checked in $krb5_dir/include/krb5/krb5.h
I confirmed this with the MIT Kerberos developers in their
IRC server just now.
# grep Mass /usr/mitkrb18/include/krb5.h
# grep Mass /usr/mitkrb18/include/krb5/krb5.h
* Copyright 1989,1990,1995,2001, 2003, 2007 by the Massachusetts
Institute of Technology.
#