PIBinaryLog fix

libs/main/io_devices/pibinarylog.h

@@ -201,6 +201,9 @@ public:
 	//! Returns timestamp of last readed record
 	PISystemTime lastReadedTimestamp() const {return lastrecord.timestamp;}
 
+	//! Returns timestamp of log start
+	PISystemTime logStartTimestamp() const {return startlogtime;}
+
 	//!Set custom file header, you can get it back when read this binlog
 	void setHeader(const PIByteArray & header);