Update to Gradle 3.1: Add gradle-3.1-bin.zip.

Change-Id: I5ade8eaac197aede4b230ab3359e8285e522dc18
diff --git a/PREBUILT b/PREBUILT
index 2fce165..7c45223 100644
--- a/PREBUILT
+++ b/PREBUILT
@@ -1,18 +1,18 @@
 This was downloaded from gradle.org:
 
-https://services.gradle.org/distributions/gradle-1.3-all.zip
-https://services.gradle.org/distributions/gradle-1.4-all.zip
-https://services.gradle.org/distributions/gradle-1.5-all.zip
-https://services.gradle.org/distributions/gradle-1.6-all.zip
-https://services.gradle.org/distributions/gradle-1.7-bin.zip
-https://services.gradle.org/distributions/gradle-1.8-bin.zip
-https://services.gradle.org/distributions/gradle-1.9-bin.zip
-https://services.gradle.org/distributions/gradle-1.10-bin.zip
-https://services.gradle.org/distributions/gradle-1.11-bin.zip
-https://services.gradle.org/distributions/gradle-1.12-bin.zip
 https://services.gradle.org/distributions/gradle-2.0-bin.zip
 https://services.gradle.org/distributions/gradle-2.1-bin.zip
 https://services.gradle.org/distributions/gradle-2.2-bin.zip
 https://services.gradle.org/distributions/gradle-2.2.1-bin.zip
-https://services.gradle.org/distributions/gradle-3.0-bin.zip
-https://services.gradle.org/distributions/gradle-3.1-all.zip
+https://services.gradle.org/distributions/gradle-2.4-all.zip
+https://services.gradle.org/distributions/gradle-2.5-all.zip
+https://services.gradle.org/distributions/gradle-2.6-all.zip
+https://services.gradle.org/distributions/gradle-2.7-all.zip
+https://services.gradle.org/distributions/gradle-2.8-all.zip
+https://services.gradle.org/distributions/gradle-2.9-all.zip
+https://services.gradle.org/distributions/gradle-2.10-all.zip
+https://services.gradle.org/distributions/gradle-2.11-all.zip
+https://services.gradle.org/distributions/gradle-2.14-bin.zip
+https://services.gradle.org/distributions/gradle-2.14.1-bin.zip
+https://services.gradle.org/distributions/gradle-3.0-all.zip
+https://services.gradle.org/distributions/gradle-3.1-bin.zip
diff --git a/gradle-3.1-all.zip b/gradle-3.1-bin.zip
similarity index 77%
rename from gradle-3.1-all.zip
rename to gradle-3.1-bin.zip
index d65398e..f4b73af 100644
--- a/gradle-3.1-all.zip
+++ b/gradle-3.1-bin.zip
Binary files differ