krb5 ksu: Enable prompt for password

Enable prompt for password when no TGT is available.

Reported by:	Dan Mahoney <[email protected]>

krb5/usr.bin/ksu/Makefile

@@ -23,7 +23,8 @@ SRCS=	authorization.c \
 	xmalloc.c
 
 CFLAGS+=-I${KRB5_DIR}/include \
-	-I${KRB5_SRCTOP}/include
+	-I${KRB5_SRCTOP}/include \
+	-DGET_TGT_VIA_PASSWD
 
 MAN=	ksu.1