Use uint32_t instead of bool in driver interface (to match current approach to bools in the driver interface)

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@2987 0c269be4-1314-0410-8aa9-9f06e86f4224

common/driver_interface.h

@@ -62,7 +62,7 @@ extern "C"
     } jack_driver_param_value_enum_t;
 
     typedef struct {
-        bool range;             /**< if true - constraint is a range (min-max), if false - it is an enumeration */
+        uint32_t range;         /**< if not 0 - constraint is a range (min-max), if zero - it is an enumeration */
 
         union {
             struct {