Add in the tweakclass, fix the json for lzma @ the server.

fml/build.gradle

@@ -33,6 +33,7 @@ minecraft {
     mcpVersion = '9.01-pre'
     fmlDir = projectDir.getAbsolutePath();
     mainClass = 'cpw.mods.fml.relauncher.ServerLaunchWrapper'
+    tweakClass = 'cpw.mods.fml.common.launcher.FMLTweaker'
     installerVersion = "1.4"
 }
 

fml/jsons/1.7.2-rel.json

@@ -58,7 +58,8 @@
       "name": "net.sf.jopt-simple:jopt-simple:4.5"
     },
     {
-      "name": "lzma:lzma:0.0.1"
+      "name": "lzma:lzma:0.0.1",
+      "serverreq":true
     },
     {
       "name": "com.paulscode:codecjorbis:20101023"