Upgrade to Gradle 2.13

This improves our documentation for the gradle protobuf plugin, as its
version is dependent on the gradle version.

Gradle now has the --tests flag, performance improvements, and support
for OpenPGP subkeys.
diff --git a/README.md b/README.md
index c5a6b54..bafd90d 100644
--- a/README.md
+++ b/README.md
@@ -103,7 +103,9 @@
     mavenCentral()
   }
   dependencies {
-    classpath 'com.google.protobuf:protobuf-gradle-plugin:0.7.4'
+    // ASSUMES GRADLE 2.12 OR HIGHER. Use plugin version 0.7.5 with earlier
+    // gradle versions
+    classpath 'com.google.protobuf:protobuf-gradle-plugin:0.7.7'
   }
 }
 
diff --git a/android-interop-testing/build.gradle b/android-interop-testing/build.gradle
index caa3f54..4d30e86 100644
--- a/android-interop-testing/build.gradle
+++ b/android-interop-testing/build.gradle
@@ -6,7 +6,7 @@
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:1.5.0'
-        classpath "com.google.protobuf:protobuf-gradle-plugin:0.7.4"
+        classpath "com.google.protobuf:protobuf-gradle-plugin:0.7.7"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/build.gradle b/build.gradle
index 9c2d3c3..91318aa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -134,7 +134,7 @@
                 okio: 'com.squareup.okio:okio:1.6.0',
                 protobuf: "com.google.protobuf:protobuf-java:${protobufVersion}",
                 protobuf_nano: "com.google.protobuf.nano:protobuf-javanano:${protobufNanoVersion}",
-                protobuf_plugin: 'com.google.protobuf:protobuf-gradle-plugin:0.7.4',
+                protobuf_plugin: 'com.google.protobuf:protobuf-gradle-plugin:0.7.7',
                 protobuf_util: "com.google.protobuf:protobuf-java-util:${protobufVersion}",
 
                 netty: 'io.netty:netty-codec-http2:[4.1.0.CR7]',
diff --git a/examples/android/build.gradle b/examples/android/build.gradle
index 913025d..493f439 100644
--- a/examples/android/build.gradle
+++ b/examples/android/build.gradle
@@ -6,7 +6,7 @@
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:1.5.0'
-        classpath "com.google.protobuf:protobuf-gradle-plugin:0.7.4"
+        classpath "com.google.protobuf:protobuf-gradle-plugin:0.7.7"
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 7c1d120..ae20da0 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Mar 02 09:04:21 PST 2016
+#Sat May 07 11:11:12 PDT 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.11-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-2.13-bin.zip
diff --git a/gradlew b/gradlew
index 9d82f78..27309d9 100755
--- a/gradlew
+++ b/gradlew
@@ -6,12 +6,30 @@
 ##
 ##############################################################################
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS=""
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
 
 APP_NAME="Gradle"
 APP_BASE_NAME=`basename "$0"`
 
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
@@ -30,6 +48,7 @@
 cygwin=false
 msys=false
 darwin=false
+nonstop=false
 case "`uname`" in
   CYGWIN* )
     cygwin=true
@@ -40,26 +59,11 @@
   MINGW* )
     msys=true
     ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
 esac
 
-# Attempt to set APP_HOME
-# Resolve links: $0 may be a link
-PRG="$0"
-# Need this for relative symlinks.
-while [ -h "$PRG" ] ; do
-    ls=`ls -ld "$PRG"`
-    link=`expr "$ls" : '.*-> \(.*\)$'`
-    if expr "$link" : '/.*' > /dev/null; then
-        PRG="$link"
-    else
-        PRG=`dirname "$PRG"`"/$link"
-    fi
-done
-SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/" >/dev/null
-APP_HOME="`pwd -P`"
-cd "$SAVED" >/dev/null
-
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 
 # Determine the Java command to use to start the JVM.
@@ -85,7 +89,7 @@
 fi
 
 # Increase the maximum file descriptors if we can.
-if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
     MAX_FD_LIMIT=`ulimit -H -n`
     if [ $? -eq 0 ] ; then
         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
diff --git a/gradlew.bat b/gradlew.bat
index 72d362d..f6d5974 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -8,14 +8,14 @@
 @rem Set local scope for the variables with windows NT shell

 if "%OS%"=="Windows_NT" setlocal

 

-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

-set DEFAULT_JVM_OPTS=

-

 set DIRNAME=%~dp0

 if "%DIRNAME%" == "" set DIRNAME=.

 set APP_BASE_NAME=%~n0

 set APP_HOME=%DIRNAME%

 

+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.

+set DEFAULT_JVM_OPTS=

+

 @rem Find java.exe

 if defined JAVA_HOME goto findJavaFromJavaHome