Upgrade Proguard to 4.10.

Downloaded from:
http://sourceforge.net/projects/proguard/files/proguard/4.10/

Bug: 8992787
Change-Id: Ia07cc5b3feed443982b7e8f2a1f361479e735b18
diff --git a/build/build.sh b/build/build.sh
index eb5fcf7..adb2ee7 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -7,6 +7,7 @@
 #
 
 ANT_HOME=${ANT_HOME:-/usr/local/java/ant}
+GRADLE_HOME=${GRADLE_HOME:-/usr/local/java/gradle}
 WTK_HOME=${WTK_HOME:-/usr/local/java/wtk}
 
 if [ -z $PROGUARD_HOME ]; then
@@ -24,9 +25,15 @@
 PROGUARD_GUI=proguard/gui/ProGuardGUI
 RETRACE=proguard/retrace/ReTrace
 ANT_TASK=proguard/ant/ProGuardTask
+GRADLE_TASK=proguard/gradle/ProGuardTask
 WTK_PLUGIN=proguard/wtk/ProGuardObfuscator
 
 ANT_JAR=$ANT_HOME/lib/ant.jar
+GRADLE_PATH=\
+$GRADLE_HOME/lib/plugins/gradle-plugins-1.3.jar:\
+$GRADLE_HOME/lib/gradle-base-services-1.3.jar:\
+$GRADLE_HOME/lib/gradle-core-1.3.jar:\
+$GRADLE_HOME/lib/groovy-all-1.8.6.jar
 WTK_JAR=$WTK_HOME/wtklib/kenv.zip
 
 PROGUARD_JAR=$LIB/proguard.jar
@@ -84,6 +91,15 @@
   echo "if you want to compile the optional ProGuard Ant task."
 fi
 
+if [ -f "${GRADLE_PATH%%:*}" ]; then
+  export CLASSPATH=$GRADLE_PATH
+  compile   $GRADLE_TASK
+  updatejar $GRADLE_TASK
+else
+  echo "Please make sure the environment variable GRADLE_HOME is set correctly,"
+  echo "if you want to compile the optional ProGuard Gradle task."
+fi
+
 if [ -f "$WTK_JAR" ]; then
   export CLASSPATH=$WTK_JAR
   compile   $WTK_PLUGIN