Add 1.7.2 base json, Gradle will automatically download updated versions of this. Keeping it in the repo allows us to see what base json we have built our jsons off of. And if it changes update accordingly.

fml/jsons/1.7.2.json

@@ -0,0 +1,173 @@
+{
+  "id": "1.7.2",
+  "time": "2013-10-25T15:00:00+02:00",
+  "releaseTime": "2013-10-25T15:00:00+02:00",
+  "type": "release",
+  "minecraftArguments": "--username ${auth_player_name} --version ${version_name} --gameDir ${game_directory} --assetsDir ${game_assets} --uuid ${auth_uuid} --accessToken ${auth_access_token}",
+  "minimumLauncherVersion": 9,
+  "libraries": [
+    {
+      "name": "java3d:vecmath:1.3.1"
+    },
+    {
+      "name": "net.sf.trove4j:trove4j:3.0.3"
+    },
+    {
+      "name": "com.ibm.icu:icu4j-core-mojang:51.2"
+    },
+    {
+      "name": "net.sf.jopt-simple:jopt-simple:4.5"
+    },
+    {
+      "name": "com.paulscode:codecjorbis:20101023"
+    },
+    {
+      "name": "com.paulscode:codecwav:20101023"
+    },
+    {
+      "name": "com.paulscode:libraryjavasound:20101123"
+    },
+    {
+      "name": "com.paulscode:librarylwjglopenal:20100824"
+    },
+    {
+      "name": "com.paulscode:soundsystem:20120107"
+    },
+    {
+      "name": "io.netty:netty-all:4.0.10.Final"
+    },
+    {
+      "name": "com.google.guava:guava:15.0"
+    },
+    {
+      "name": "org.apache.commons:commons-lang3:3.1"
+    },
+    {
+      "name": "commons-io:commons-io:2.4"
+    },
+    {
+      "name": "net.java.jinput:jinput:2.0.5"
+    },
+    {
+      "name": "net.java.jutils:jutils:1.0.0"
+    },
+    {
+      "name": "com.google.code.gson:gson:2.2.4"
+    },
+    {
+      "name": "com.mojang:authlib:1.3"
+    },
+    {
+      "name": "org.apache.logging.log4j:log4j-api:2.0-beta9"
+    },
+    {
+      "name": "org.apache.logging.log4j:log4j-core:2.0-beta9"
+    },
+    {
+      "name": "org.lwjgl.lwjgl:lwjgl:2.9.0",
+      "rules": [
+        {
+          "action": "allow"
+        },
+        {
+          "action": "disallow",
+          "os": {
+            "name": "osx"
+          }
+        }
+      ]
+    },
+    {
+      "name": "org.lwjgl.lwjgl:lwjgl_util:2.9.0",
+      "rules": [
+        {
+          "action": "allow"
+        },
+        {
+          "action": "disallow",
+          "os": {
+            "name": "osx"
+          }
+        }
+      ]
+    },
+    {
+      "name": "org.lwjgl.lwjgl:lwjgl-platform:2.9.0",
+      "natives": {
+        "linux": "natives-linux",
+        "windows": "natives-windows"
+      },
+      "extract": {
+        "exclude": [
+          "META-INF/"
+        ]
+      },
+      "rules": [
+        {
+          "action": "allow"
+        },
+        {
+          "action": "disallow",
+          "os": {
+            "name": "osx"
+          }
+        }
+      ]
+    },
+    {
+      "name": "org.lwjgl.lwjgl:lwjgl:2.9.1-nightly-20131017",
+      "rules": [
+        {
+          "action": "allow",
+          "os": {
+            "name": "osx"
+          }
+        }
+      ]
+    },
+    {
+      "name": "org.lwjgl.lwjgl:lwjgl_util:2.9.1-nightly-20131017",
+      "rules": [
+        {
+          "action": "allow",
+          "os": {
+            "name": "osx"
+          }
+        }
+      ]
+    },
+    {
+      "name": "org.lwjgl.lwjgl:lwjgl-platform:2.9.1-nightly-20131017",
+      "natives": {
+        "osx": "natives-osx"
+      },
+      "extract": {
+        "exclude": [
+          "META-INF/"
+        ]
+      },
+      "rules": [
+        {
+          "action": "allow",
+          "os": {
+            "name": "osx"
+          }
+        }
+      ]
+    },
+    {
+      "name": "net.java.jinput:jinput-platform:2.0.5",
+      "natives": {
+        "linux": "natives-linux",
+        "windows": "natives-windows",
+        "osx": "natives-osx"
+      },
+      "extract": {
+        "exclude": [
+          "META-INF/"
+        ]
+      }
+    }
+  ],
+  "mainClass": "net.minecraft.client.main.Main"
+}