defines a new RenderInstType RIT_DecalRoad;

engine:
renderPassManager.h - definition
renderPassManager.cpp - reference string
script:
\game\core\scripts\client\renderManager.cs - controls the rendering order of object types.
immediate purpose: provides a render sorting mechanism specific to decal roads.
long term impact: includes a basiconly flag used by deferred shading to denote that this will only be rendered using the basic lighting functionality, as opposed to the higher-order advanced lighting mechanisms.