flowInstance增加getProcDef，findActivity

smtweb-framework/bpm/src/main/java/cc/smtweb/system/bpm/web/engine/flow/FlowInstance.java

@@ -966,4 +966,14 @@ public class FlowInstance {
         worker.work(bean, comment, us.getUserId());
         getCommentDao().updateEntity(bean);
     }
+
+    //获取流程定义信息
+    public ModelProc getProcDef() {
+        return procDef;
+    }
+
+    //获取指定的任务定义信息
+    public Activity findActivity(String actId) {
+        return procDef.getProcInfo().findActivity(actId);
+    }
 }