XML metadata extraction with sample.

Added tests into build.

This is now ready for testing, comments and suggestions.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6056 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

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

@@ -222,6 +222,8 @@ public interface MetadataExtracter extends ContentWorker
      * reliant transformers will be used for a specific extraction.
      * 
      * @return Returns the approximate number of milliseconds per transformation
+     * 
+     * @deprecated          Generally not useful or used.  Extraction is normally specifically configured.
      */
     public long getExtractionTime();