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

db/dbtextstream.h

@@ -163,9 +163,7 @@ private:
 
 	bool was_param;
 	bool ext_escape;
-
-	// a temporarily stream used when serializing spaces
-	TextStream<std::wstring> space_stream;
+	TextStream<std::wstring> tmp_stream;
 
 };