Add HR catalogue index

[LukeCEL]

Suggested here on the Celestia Forums: there should be an hrindex.dat file that stores HR catalogue designations in much the same way as hdindex.dat and saoindex.dat

[SevenSpheres]

Also, celestia.cfg references a nonexistent "gliesexindex.dat". Luke thinks it was once there but later removed - does anyone know if that's the case?

[SevenSpheres]

@LukeCEL, is it possible for you to make a gliesexindex.dat and see if it works with the current code?

[375gnu]

@LukeCEL do you know any sources besides simbad to retrieve this info?

[LukeCEL]

Here are two preliminary files - hrindex.dat and gliesexindex.dat. I created them using the buildxindices.pl tool in the source code. Before running, I replaced all instances of HD in the perl script with HR or GJ respectively.

There may be issues with these files. Notably, a few oddball stars are in the HR catalog but not in the HIP catalog. Same with GJ.

hrxindex.dat.zip
gliesexindex.dat.zip

[SevenSpheres]

I put gliesexindex.dat in "data", and there's no change even though it's specified in celestia.cfg

[ajtribick]

I might be able to do something with the Gliese cross-index as part of stars.dat generation, since CNS5 includes Gaia cross-references.