Return a count of the floppy drives on a system.
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 Syntax

        GT_FlopCnt() --> nNumberOfDrives

 Arguments:

      None.

 Returns:

      The number of physical floppy drives fitted to a machine.

 Description:

      GT_FlopCnt() can be used to check if a system has more than one
      floppy drive.

      Some systems have just one floppy drive that can ``act'' as either
      drive A: or B:. If your system attempts to access either of these
      drives while it is ``acting'' as the other, DOS will display a
      message in screen asking the user to place the disk in the drive
      and press any key.

      Use GT_FlopCnt() to see if this could be a problem. If the machine
      has only one floppy drive, use GT_FlopNam() to see if the floppy
      drive is acting as A: or B:.

 Examples:

      // This example function will copy a file to the floppy drive.
      // Before doing so it checks that the name of the drive is ok.

      function CopyToFloppy(cFileName)
      local cFloppy := "A:"
      if GT_FlopCnt() == 1
         cFloppy := GT_FlopNam()+":"
      endif
      copy (cFileName) to (cFloppy+cFileName)
      return(NIL)

 Source: FDRVCNT.C

 Author:  Dave Pearson