[1.7.10] Fix dead lock and NPE when jumping backwards in replays

The deadlock is a regression due to login phase inclusion.
Not sure about the NPE, it might have always existed.

src/main/java/com/replaymod/replay/ReplayHandler.java

@@ -642,6 +642,12 @@ public class ReplayHandler {
                 replaySender.setAsyncMode(true);
                 replaySender.setReplaySpeed(0);
 
+                //#if MC<10800
+                //$$ while (mc.currentScreen instanceof GuiOpeningReplay) {
+                //$$     mc.currentScreen.handleInput();
+                //$$ }
+                //#endif
+
                 mc.getNetworkHandler().getClientConnection()
                         //#if MC>=11300
                         .tick();

src/main/java/com/replaymod/replay/mixin/MixinFMLClientHandler.java

@@ -0,0 +1,29 @@
+//#if MC<10800
+//$$ package com.replaymod.replay.mixin;
+//$$
+//$$ import com.replaymod.replay.gui.screen.GuiOpeningReplay;
+//$$ import cpw.mods.fml.client.FMLClientHandler;
+//$$ import net.minecraft.client.Minecraft;
+//$$ import net.minecraft.client.gui.GuiScreen;
+//$$ import org.spongepowered.asm.mixin.Mixin;
+//$$ import org.spongepowered.asm.mixin.injection.At;
+//$$ import org.spongepowered.asm.mixin.injection.Inject;
+//$$ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+//$$
+//$$ @Mixin(value = FMLClientHandler.class, remap = false)
+//$$ public class MixinFMLClientHandler {
+//$$     // Usually this method is called async and can just block and wait for MC to tick the network manager
+//$$     // Since we sometimes call it sync though, we need to take care of ticking ourselves.
+//$$     @Inject(method = "waitForPlayClient", at = @At("HEAD"), remap = false)
+//$$     private void tickNetworkManager(CallbackInfo ci) {
+//$$         Minecraft mc = Minecraft.getMinecraft();
+//$$         if (!mc.isCallingFromMinecraftThread()) {
+//$$             return;
+//$$         }
+//$$         GuiScreen gui = mc.currentScreen;
+//$$         if (gui instanceof GuiOpeningReplay) {
+//$$             gui.handleInput();
+//$$         }
+//$$     }
+//$$ }
+//#endif

src/main/resources/mixins.replay.replaymod.json

@@ -26,6 +26,8 @@
     //$$ "MixinRenderManager",
     //#endif
     "MixinViewFrustum",
+    //#else
+    //$$ "MixinFMLClientHandler",
     //#endif
     "MixinKeyboardListener",
     "MixinPlayerControllerMP",