minor timezone fix +/-

source/bforce/u_time.c

@@ -176,15 +176,15 @@ long time_gmtoffset(void)
 	long tz         = local.tm_yday - gmt.tm_yday;
 	
 	if( tz > 1 )
-		tz = 24;
-	else if( tz < -1 )
 		tz = -24;
+	else if( tz < -1 )
+		tz = +24;
 	else
 		tz *= 24;
 	
-	tz += local.tm_hour - gmt.tm_hour;
+	tz +=  gmt.tm_hour - local.tm_hour;
 	tz *= 60;
-	tz +=  local.tm_min - gmt.tm_min;
+	tz +=  gmt.tm_min - local.tm_min;
 	
 	return tz;
 }
@@ -200,7 +200,7 @@ long time_gmtoffset(void)
  */
 char *time_string_gmtoffset(char *buffer)
 {
-	long tz   = time_gmtoffset();
+	long tz   = -time_gmtoffset();
 	char sign = (tz > 0)?'+':'-';
 	tz = abs(tz);
 	unsigned int hour  = tz/60;