Manhack reskin

Skin for the Viscerator (aka Manhack, for those of you not versed in Universal Union vocabulary), that makes it look a fair bit nastier, if that's possible. Adds more blood spatter to the front area, desaturates the turquoise internal bits making it look more Combine-y, adjusts the texture's glow map, shrinks the glow effect for its "eyes" which adds to the sinisterness, and a few other details. Also makes the gibs from smashed Viscerators have the same texture as whole ones. Now by request also includes a "clean" version, slightly brighter in places and without the blood spatter. To use that, delete .vtx files in the materials/models/manhack folder that do not end in "_CLN" and then remove "_CLN" from the remaining ones. credit: https://gamebanana.com/mods/182471