[yt-dev] Issue #795: ART particle data file recognition (yt_analysis/yt)

[karraki]

New issue 795: ART particle data file recognition
https://bitbucket.org/yt_analysis/yt/issue/795/art-particle-data-file-recognition

karraki:

yt is unable to automatically locate the particle data file when certain ART files are loaded.

For instance:

```
#!python

pf = load('10MpcBox_HartGal_csf_a0.500.d')
yt : [INFO     ] 2014-02-28 15:07:24,747 discovered particle_data:/hyades/karraki/yt/scripts/10MpcBox_HartGal_csf_a0.500.d
```


This only occurs with Sebastian's output files not Daniel's files.

http://paste.yt-project.org/show/4338/

If the full file names of each type are provided, the files load just fine.

yt-3.0 be8f535106ec

Responsible: MatthewTurk