server/modules/filter/Makefile: Fixed problem which prevented cleaning and compiling hintfilter library.

server/core/config.c: Removed unused if..else block from config_get_valint. Changed it also to return value which indicates whether the operation succeed. Added config_get_valbool similar to config_get_valint.
service.c:Added typelib-like struct and array of valid boolean values. Fixed parameter type test in service_set_param_value. Completed boolean type parameter handling.
hintparser.c:Fixed error message for non-maxscale hints.
readwritesplit.c:Added loading of configuration parameters from service to instance and from instance to each new session. Fixed routing condition in get_route_target. Modified get_route_target so that it takes also rw_read_sesvars_from_slaves and rw_write_sesvars_to_all as parameters.
skygw_types.h: added array size counting macro.

server/include/config.h

@@ -99,9 +99,16 @@ bool config_set_qualified_param(
         config_param_type_t type);
 
 
-int config_get_valint(
+bool config_get_valint(
+	int*                val,
         CONFIG_PARAMETER*   param,
         const char*         name, /*< if NULL examine current param only */
         config_param_type_t ptype);
 
+bool config_get_valbool(
+	bool*               val,
+	CONFIG_PARAMETER*   param,
+	const char*         name, /*< if NULL examine current param only */
+	config_param_type_t ptype);
+
 #endif