HER-1984 save script state - implement by adding a map to the application context for arbitrary use, and make sure the app context is available in all scripting environments

* PathSharingContext.java
    new member variable ConcurrentHashMap data and accessor getData()
* ScriptedProcessor.java, ScriptedDecideRule.java
    make appCtx available to scripts; also remove unused member sharedMap
* ActionDirectory.java
    formatting fix

commons/src/main/java/org/archive/spring/PathSharingContext.java

@@ -23,6 +23,7 @@ import java.io.File;
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map.Entry;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -178,4 +179,18 @@ public class PathSharingContext extends FileSystemXmlApplicationContext {
         }
         super.initLifecycleProcessor();
     }
+    
+    protected ConcurrentHashMap<Object, Object> data;
+
+    /**
+     * @return a shared map for arbitrary use during a crawl; for example, could
+     *         be used for state persisting for the duration of the crawl,
+     *         shared among ScriptedProcessor, scripting console, etc scripts
+     */
+    public ConcurrentHashMap<Object, Object> getData() {
+        if (data == null) {
+            data = new ConcurrentHashMap<Object, Object>();
+        }
+        return data;
+    }
 }