Replace tabs with spaces

As our coding conventions mandate.

src/lib/ecore/efl_boolean_model.eo

@@ -11,13 +11,13 @@ class @beta Efl.Boolean_Model extends Efl.Composite_Model
          params {
             @in name: string; [[The name of the new boolean property.]]
             @in default_value: bool; [[Default value for new boolean property.]]
-	 }
+         }
       }
       boolean_del {
          [[Deletes an existing named boolean property.]]
          params {
             @in name: string; [[Name of the property to be deleted.]]
-	 }
+         }
       }
       boolean_iterator_get {
          [[Gets an iterator that will quickly find all the indices with the requested value for a specific property.]]