eolian: replace Eina.Value with generic_value usage

src/lib/elementary/elm_app_client.eo

@@ -38,7 +38,7 @@ class Elm.App.Client (Eo.Base)
       view_open {
          [[Open an application view.]]
          params {
-            @in args: Eina.Value * @optional; [[an array of.]]
+            @in args: generic_value * @optional; [[an array of.]]
             @in view_open_cb: Elm_App_Client_Open_View_Cb @optional; [[callback to be called when view open]]
             @in data: const(void)* @optional; [[callback user data]]
          }

src/lib/elementary/elm_prefs.eo

@@ -92,7 +92,7 @@ class Elm.Prefs (Elm.Widget, Efl.File)
          return: bool; [[$true, on success, $false otherwise]]
          params {
             @in name: const(char)*; [[The name of the item (as declared in the prefs collection)]]
-            @in value: const(Eina.Value)*; [[The value to set on the item. It should be typed as the item expects, preferably, or a conversion will take place]]
+            @in value: const(generic_value)*; [[The value to set on the item. It should be typed as the item expects, preferably, or a conversion will take place]]
          }
       }
       item_value_get @const {
@@ -105,7 +105,7 @@ class Elm.Prefs (Elm.Widget, Efl.File)
 
          params {
             @in name: const(char)*; [[The name of the item (as declared in the prefs collection) to get value from]]
-            @out value: Eina.Value; [[Where to store the value of the item. It will be overwritten and setup with the type the item is bound to]]
+            @out value: generic_value; [[Where to store the value of the item. It will be overwritten and setup with the type the item is bound to]]
          }
       }
       item_object_get {

src/lib/eo/eina_types.eot

@@ -25,5 +25,3 @@ struct @extern Eina.Matrix3 {
 struct @extern Eina.Inarray;
 
 type @extern Eina.Unicode: uint32;
-
-struct @extern Eina.Value;

src/lib/eo/eo_base.eo

@@ -259,7 +259,7 @@ abstract Eo.Base ()
             key: const(char)*; [[the key associated with the value]]
          }
          values {
-            value: Eina.Value *; [[the value to set]]
+            value: generic_value *; [[the value to set]]
          }
       }
       event_thaw {