Initialize config with default values if no config file can be parsed

If no configuration file is given on the command line and no
system configuration file can be found, initialize the settings to their
default values.

Avoids:

    example.te:           0: (F): Unknown ordering configuration given to C-001 (F-002)
    example.te:           9: (F): Could not find ordering info for line (F-002)
    example.te:          10: (F): Could not find ordering info for line (F-002)
    example.te:          11: (F): Could not find ordering info for line (F-002)
    example.te:          12: (F): Could not find ordering info for line (F-002)
    example.te:          14: (F): Could not find ordering info for line (F-002)
    example.te:          15: (F): Could not find ordering info for line (F-002)
    example.te:          17: (F): Could not find ordering info for line (F-002)
    example.te:          18: (F): Could not find ordering info for line (F-002)
    example.te:          25: (F): Could not find ordering info for line (F-002)
    example.te:          27: (F): Could not find ordering info for line (F-002)
    example.te:          28: (F): Could not find ordering info for line (F-002)

src/main.c

@@ -332,6 +332,10 @@ int main(int argc, char **argv)
 		// roles that we wouldn't otherwise know about
 		insert_into_decl_map("system_u", "__assumed__", DECL_USER);
 		insert_into_decl_map("object_r", "__assumed__", DECL_ROLE);
+
+		// initialize to default settings
+		ccd.order_conf = ORDER_LAX;
+		ccd.skip_checking_generated_fcs = true;
 	}
 
 	for (const struct string_list *config_check_id = config_disabled_checks; config_check_id; config_check_id = config_check_id->next) {