Added removal of old jars in installation directory during installation (some of them could be conflicting)

Author: zilm13

EthereumHarmony.install4j

@@ -243,6 +243,27 @@
             <preActivation />
             <postActivation />
             <actions>
+              <action name="" id="209" customizedId="" beanClass="com.install4j.runtime.beans.actions.files.DeleteFileAction" enabled="true" commentSet="true" comment="Removing old jars, some of them could be conflicting" actionElevationType="elevated" rollbackBarrier="false" multiExec="false" failureStrategy="1" errorMessage="">
+                <serializedBean>
+                  <java class="java.beans.XMLDecoder">
+                    <object class="com.install4j.runtime.beans.actions.files.DeleteFileAction">
+                      <void property="files">
+                        <array class="java.io.File" length="1">
+                          <void index="0">
+                            <object class="java.io.File">
+                              <string>lib</string>
+                            </object>
+                          </void>
+                        </array>
+                      </void>
+                      <void property="recursive">
+                        <boolean>true</boolean>
+                      </void>
+                    </object>
+                  </java>
+                </serializedBean>
+                <condition />
+              </action>
               <action name="" id="9" customizedId="" beanClass="com.install4j.runtime.beans.actions.InstallFilesAction" enabled="true" commentSet="false" comment="" actionElevationType="elevated" rollbackBarrier="false" multiExec="false" failureStrategy="2" errorMessage="${i18n:FileCorrupted}">
                 <serializedBean>
                   <java class="java.beans.XMLDecoder">