Convert xyzid files to ply in world coordinates

[crmauceri]

https://pgda.gsfc.nasa.gov/products/90 provides pointclouds with the following format

File format is binary double precision, 4 columns: X,Y,Z,ID where X,Y are the stereographic coordinates (in meters), Z is the surface height (in meters) and ID is the LOLA RDR ID. 

The XYZID_2_point executable converts these clouds into ply clouds in a ECEF coordinate frame which can then be used with point_2_landmark to generate a landmark file.