Upgrade gradle to 2.9

Summary:
public

New version of gradle has a better support for zipTree copy task. Since we have a few of those including one for boost library which used to take very long, after upgrading we no longer need 6a656a1.

Also seems like many improvements made to gradle since 2.2 made it perform better on incremental builds (around 10% improvement on my laptop).

Command used to upgrade gradle version:

    gradle wrapper --gradle-version 2.9

Some of the plugins require updating as well since the previous versions were incompatible with gradle 2.9.

Closes react#4462

Reviewed By: mkonicek

Differential Revision: D2754786

Pulled By: mkonicek

fb-gh-sync-id: 92c07d29aec6d5b4b2c55205b42b135c4d9479a9

Author: kmagiera

ReactAndroid/build.gradle

@@ -29,17 +29,11 @@ task downloadBoost(dependsOn: createNativeDepsDirectories, type: Download) {
     dest new File(downloadsDir, 'boost_1_57_0.zip')
 }
 
-task prepareBoost(dependsOn: downloadBoost) {
-    inputs.files downloadBoost.dest, 'src/main/jni/third-party/boost/Android.mk'
-    outputs.dir "$thirdPartyNdkDir/boost"
-    doLast {
-        copy {
-            from { zipTree(downloadBoost.dest) }
-            from 'src/main/jni/third-party/boost/Android.mk'
-            include 'boost_1_57_0/boost/**/*.hpp', 'Android.mk'
-            into "$thirdPartyNdkDir/boost"
-        }
-    }
+task prepareBoost(dependsOn: downloadBoost, type: Copy) {
+    from zipTree(downloadBoost.dest)
+    from 'src/main/jni/third-party/boost/Android.mk'
+    include 'boost_1_57_0/boost/**/*.hpp', 'Android.mk'
+    into "$thirdPartyNdkDir/boost"
 }
 
 task downloadDoubleConversion(dependsOn: createNativeDepsDirectories, type: Download) {

build.gradle

@@ -6,8 +6,8 @@ buildscript {
         mavenLocal()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.3.1'
-        classpath 'de.undercouch:gradle-download-task:1.2'
+        classpath 'com.android.tools.build:gradle:1.5.0'
+        classpath 'de.undercouch:gradle-download-task:2.0.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
-#Wed Apr 10 15:27:10 PDT 2013
+#Mon Dec 14 14:06:01 GMT 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.2.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.9-bin.zip