updating gradle to version 3.2.1

CHANGELOG.md

 Upcoming version:
 -----------------
+  - updating gradle to version 3.2.1 (Nikolaus Krismer)
   - updating gradle to version 3.2 (Nikolaus Krismer)
   - updating geoserver to latest version (Nikolaus Krismer)
   - changing git repo link in contribution guidelines (Nikolaus Krismer)

gradle/wrapper/gradle-wrapper.properties

-#Tue Nov 22 17:27:34 CET 2016
+#Mon Nov 28 09:30:36 CET 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.2.1-bin.zip

gradlew

@@ -155,13 +155,14 @@ if $cygwin ; then
 fi
 
 # Escape application args
-for s in "${@}" ; do
-    s=\"$s\"
-    APP_ARGS=$APP_ARGS" "$s
-done
+save ( ) {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
-eval set -- "$DEFAULT_JVM_OPTS" "$JAVA_OPTS" "$GRADLE_OPTS" "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
 # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
 if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then