IES profile support and fixed numerous editor crashes.

neo/engine/renderer/tr_local.h

@@ -209,6 +209,7 @@ public:
 
 	const idMaterial *		lightShader;			// guaranteed to be valid, even if parms.shader isn't
 	idImage *				falloffImage;
+	idImage *				iesImage;
 
 	idVec3					globalLightOrigin;		// accounting for lightCenter and parallel
 
@@ -322,6 +323,7 @@ typedef struct viewLight_s {
 	const idMaterial *		lightShader;				// light shader used by backend
 	const float	*			shaderRegisters;			// shader registers used by backend
 	idImage *				falloffImage;				// falloff image used by backend
+	idImage *				iesImage;					// optional IES photometric profile
 
 	const struct drawSurf_s	*globalShadows;				// shadow everything
 	const struct drawSurf_s	*localInteractions;			// don't get local shadows