highlight interfaces from interface terminal.

src/main/java/appeng/client/render/BlockPosHighlighter.java

@@ -0,0 +1,25 @@
+package appeng.client.render;
+
+import net.minecraft.util.math.BlockPos;
+
+// taken from McJty's McJtyLib
+public class BlockPosHighlighter
+{
+    private static BlockPos hilightedBlock;
+    private static long expireHilight;
+
+    public static void hilightBlock( BlockPos c, long expireHilight ) {
+        hilightedBlock = c;
+        BlockPosHighlighter.expireHilight = expireHilight;
+    }
+
+    public static BlockPos getHilightedBlock() {
+        return hilightedBlock;
+    }
+
+    public static long getExpireHilight() {
+        return expireHilight;
+    }
+
+
+}