Merged V2.2 to HEAD

8121: Merged V2.1 to V2.2
      8088: Turned off debug logging.
      8090: Tweaked session cache limiting for AVM.
      8095: Fix for issue raised in ACT 402
      8108: Fix for AWC-1816
      8115: Build fix 
      8117: Fix AR-1217: OpenOffice connection is actively maintained

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@8480 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/content/metadata/MetadataExtracterRegistry.java

@@ -67,6 +67,23 @@ public class MetadataExtracterRegistry
         extracterCacheReadLock = extractionCacheLock.readLock();
         extracterCacheWriteLock = extractionCacheLock.writeLock();
     }
+    
+    /**
+     * Force the registry to drop its cache of extractors.  This is useful for the case where an extractor
+     * becomes available only after the registry has initialized the cache.
+     */
+    public void resetCache()
+    {
+        extracterCacheWriteLock.lock();
+        try
+        {
+            extracterCache.clear();
+        }
+        finally
+        {
+            extracterCacheWriteLock.unlock();
+        }
+    }
 
     /**
      * Register an instance of an extracter for use