fixed: there were mktime() used on some dirs Items

so sometimes the time of the dir was changed

now for converting tm into time_t use:
time_t Time(const tm & par);
time_t Time(const tm * par);
tm     Time(time_t par);
from core/misc.h

now winix internally use GMT time
only when printing it is converted to local user time
temporarily all users use the same local time (config: time_zone_offset)
(only logs are genereted with local system time)

added to system:
time_t LocalTime(time_t gmt_time);
tm     LocalTime(const tm * ptm);
tm     LocalTime(const tm & ptm);
they convert GMT time to local user time




git-svn-id: svn://ttmath.org/publicrep/winix/trunk@666 e52654a7-88a9-db11-a3e9-0013d4bc506e

core/users.h

@@ -39,6 +39,7 @@ public:
 
 	void Clear();
 	void ReadUsers(Db * db);
+	void SetTimeZoneOffset(int offset); // !! temporarily one time_zone for all users
 	bool AddUser(const User & user);
 	bool IsUser(const std::string & name);
 	User * GetUser(long user_id);