checkArtFiles.pl 2016-10-05

Basically this is a perl script that compares ART_REF* to ART_DEF*, and points out missing .dds, .kfm, .nif files from any of the ART_DEF statements.

Also included is a .csh script to run (in cgywin) from the various paths set in @artSrcs.

See this post for directions:
http://forums.civfanatics.com/showthread.php?p=6243908#post6243908