Merge pull request #540 from AmbientMalice/patch-4

Copy V8 combiner from GLideN64 to Glide64.

Source/Glide64/Combine.cpp

@@ -15902,6 +15902,10 @@ void CombineBlender ()
       A_BLEND (GR_BLEND_SRC_ALPHA, GR_BLEND_ONE);
       break;
       
+      case 0x5000: /* Vigilante 8 explosions */
+      A_BLEND (GR_BLEND_ONE_MINUS_SRC_ALPHA, GR_BLEND_SRC_ALPHA);
+      break;
+            
     default:
       A_BLEND (GR_BLEND_SRC_ALPHA, GR_BLEND_ONE_MINUS_SRC_ALPHA);
     }