Re-write reprod to support all versions in one tree

gradle/reprod/patches/mixin/0005-Replace-fernflower-SNAPSHOT-depencency.patch

@@ -0,0 +1,25 @@
+From c66ba83e4b27f6f094c2dcdaaac095d3ca69b41c Mon Sep 17 00:00:00 2001
+From: Jonas Herzig <me@johni0702.de>
+Date: Tue, 8 Aug 2017 19:35:08 +0200
+Subject: [PATCH 5/7] Replace fernflower SNAPSHOT depencency
+
+---
+ build.gradle | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/build.gradle b/build.gradle
+index f8598a3..e9a965b 100644
+--- a/build.gradle
++++ b/build.gradle
+@@ -143,7 +143,7 @@ dependencies {
+ 
+     // Fernflower decompiler
+     fernflowerCompile configurations.compile
+-    fernflowerCompile 'org.jetbrains.java.decompiler:fernflower:sponge-SNAPSHOT'
++    fernflowerCompile 'com.github.fesh0r:fernflower:adbf29f8'
+ 
+     // LegacyLauncher service
+     launchwrapperCompile configurations.compile
+-- 
+2.5.5
+