"configure --enable-gssapi" should fail if krb5-config is not found
"configure --enable-gssapi" should fail if krb5-config is not found

"configure --enable-gssapi" on a system without GSS-API installed
reports:

./configure: line 2884: krb5-config: command not found
./configure: line 2885: krb5-config: command not found

but completes normally. It should fail if Kerberos cannot be
configured.

Signed-off-by: Chuck Lever <e7d8216bf9b1956703857d0050bd04192118f43d@oracle.com>
Signed-off-by: Steve Dickson <305cc9d5027c0f4e08c2697d4cabde07a8221669@redhat.com>

Distrotech/libtirpc,Distrotech/libtirpc,Distrotech/libtirpc