(krb5_cc_set_default_name): allow setting the default cc name, this is

not very useful for general purpose glue since its not possible to
glue in user information (like uid), but for CCAPI it works just fine


git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@14091 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/krb5/cache.c

@@ -200,9 +200,13 @@ krb5_cc_set_default_name(krb5_context context, const char *name)
     char *p;
 
     if (name == NULL) {
-	char *e = NULL;
+	const char *e = NULL;
+
 	if(!issuid())
 	    e = getenv("KRB5CCNAME");
+	if (e == NULL)
+	    e = krb5_config_get_string(context, NULL, "libdefault",
+				       "default_cc_name", NULL);
 	if (e)
 	    p = strdup(e);
 	else