The Close member function now resets all internal variables to the

same values as the contstructor.  This is to ensure a class instance
can be re-used without destruction/construction (as when used within
the matlab interface).

DaqFileIO.cxx

@@ -477,6 +477,14 @@ CDaqLowLevelIo::Close(void)
 {
 	fclose(m_pFile);
 	m_pFile         = 0;
+	m_UserErrorFunc = DefaultErrorFunc;
+	m_UserProgrFunc = DefaultProgressFunc;
+
+	m_HaveToc    = false;
+	m_FirstFrame = -1;
+	m_LastFrame  = -1;
+	m_EofStatus  = eDAQ_EOF_UNDEFINED;
+	m_TocExists  = false;
 }