build: Switch to use gradle wrapper

Change-Id: I13ed44edc30badebbe325e2cabd4cbd857f065ad
diff --git a/.vagrant/Vagrantfile b/.vagrant/Vagrantfile
index 4f6ba1c..41ef2df 100644
--- a/.vagrant/Vagrantfile
+++ b/.vagrant/Vagrantfile
@@ -7,16 +7,12 @@
 
 CRYSTAX_NDK_VERSION=10.3.1
 
-GRADLE_VERSION=2.10
 SDK_VERSION=24.4.1
 BUILD_TOOLS_VERSION=21.1.2
 COMPILE_SDK_VERSION=21
 
 sudo apt-get install -y build-essential git openjdk-7-jdk unzip
-
-# SDK binaries need i386 libraries
-sudo dpkg --add-architecture i386;
-sudo apt-get update -qq; sudo apt-get install -y libc6:i386 libncurses5:i386 libstdc++6:i386 zlib1g:i386
+sudo apt-get install -y lib32stdc++6 lib32z1 lib32z1-dev
 
 wget -nv https://www.crystax.net/download/crystax-ndk-$CRYSTAX_NDK_VERSION-linux-x86_64.tar.xz
 tar xf crystax-ndk-$CRYSTAX_NDK_VERSION-linux-x86_64.tar.xz
@@ -32,11 +28,6 @@
 echo "y" | android update sdk --filter platform-tools,build-tools-$BUILD_TOOLS_VERSION,android-$COMPILE_SDK_VERSION,extra-android-support,extra-android-m2repository,extra-google-m2repository --no-ui --all --force
 echo "y" | android update sdk --filter "android-19" --no-ui --all --force
 
-wget -nv https://services.gradle.org/distributions/gradle-$GRADLE_VERSION-bin.zip
-unzip gradle-$GRADLE_VERSION-bin.zip
-rm gradle-$GRADLE_VERSION-bin.zip
-export PATH=$PATH:`pwd`/gradle-$GRADLE_VERSION/bin
-
 echo sdk.dir=`pwd`/android-sdk-linux > local.properties
 echo ndk.dir=`pwd`/crystax-ndk-$CRYSTAX_NDK_VERSION >> local.properties
 SCRIPT