You can convert those to Pronto Hex using MakeHex, but you need to do some external translation.
The Protocol is nec1, so you use the nec1.irp file with MakeHex.
The device number is 127 (which you must edit into nec1.irp).
The harder to translate part is the individual function numbers. There are few enough in that list, that it easier for me to tell you the function numbers than explain the process (but you can find the method to use the EFC calculator of IR.exe to translate LIRC data in other threads with an appropriate search).
Depending on the software you have, you might be able to use Pronto Hex directly in the MX-850 editor. But it is probably easier to use IrPanels or Hex2CCF to convert the whole output of MakeHex to a CCF file in one step, then use the CCF file in the MX850 Universal browser.
