Monitor Input for File Dialog Function

[wevanarsdale]

The prevalence of systems with more than one display suggests the addition of a "monitor" input to the unused terminal on the connector of the File Dialog function.  This U16 input should allow developers to specify a display using the VI Front Panel Window:Monitor property.  In addition, this function should appear on the Advanced File Functions subpalette.  The File Dialog express VI should be promoted to the File I/O palette.