M72 PALs tested

Zabanitu tested 3 of the 4 dumps in the M72 archive. All the tested ones worked.
Im not sure where the forth one is from but it is the same file exactly as the one I have listed for R-Type.
I would like to confirm if R-Type uses a different PAL or not. I dont see why it would but you never know.

Until we can confirm it, Ill leave both entries in the table.

Thanks to Zab for testing.