removed: dependencies to 'tz' system structure

now we are using PT::Date from pikotools



git-svn-id: svn://ttmath.org/publicrep/winix/trunk@839 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/item.h

@@ -12,6 +12,8 @@
 
 #include <string>
 #include "space/space.h"
+#include "date/date.h"
+
 
 
 #define WINIX_ITEM_FILETYPE_NONE		0
@@ -37,8 +39,8 @@ struct Item
 
 	int privileges;
 
-	tm date_creation;
-	tm date_modification;
+	PT::Date date_creation;
+	PT::Date date_modification;
 
 	std::wstring subject;
 	std::wstring content;