HL: Source - 'High-Definition': Source pack v1.03

This is version 1.03 (the final version) of the High Definition: Source pack, which is a ported recreation of the Half-Life High Definition pack that was originally made for Half-Life, Half-Life: Blue Shift, and Half-Life: Opposing Force. The only pre-existing pack I was able to find on this site was for an outdated version of this pack that contains quite a few bugs that been patched since that version's release, so I decided to re-upload the latest available version here for others to use as they see fit.

Enjoy!