1.80-planetinfo-data-extract.log is the (relevant) log lines from running 26c815b3 in OO_DUMP_PLANETINFO mode for every system.
radii.txt separate file containing planet radii in km because I forgot to include that value in the log dump and don't want to spend four hours regenerating it
seeds.txt separate file containing system seed strings, same reason
planetlog.pl is a tool to convert this into a planetinfo.plist file

The log is saved here because even with the debugging tools enabled by OO_DUMP_PLANETINFO it still takes about four hours to generate it.

If we want to change the generation rules a bit later (e.g. modify distance ratios, or planet colour schemes) then it may be easier to modify planetlog.pl and regenerate.