fix threaded cleaner, some oracle modifications

* threaded cleaner gets own db_hello
	- selects instance_name from database
	- if not found, return error
	- if found, insert conninfo and do the config stuff
          like normal db_hello
* threaded cleaner waits until db_hello returns ok
  otherwise sleeps 5 seconds

* fixed oracle instance_name insert into table instead of instance_id

* added oracle truncate/delete all tables scripts

refs #29,#31

module/idoutils/db/oracle/oracle-delete.sql

@@ -0,0 +1,10 @@
+declare
+v_new_tab_name varchar2(35);
+begin
+    for c1 in (select table_name from user_tables) loop
+          v_new_tab_name := '' || C1.Table_Name|| '' ;
+          execute immediate ('delete from '||v_new_tab_name) ;
+          commit;
+    end loop;
+end;
+/

module/idoutils/db/oracle/oracle-truncate.sql

@@ -0,0 +1,10 @@
+declare
+v_new_tab_name varchar2(35);
+begin
+    for c1 in (select table_name from user_tables) loop
+          v_new_tab_name := '' || C1.Table_Name|| '' ;
+          execute immediate (' truncate table '||v_new_tab_name) ;
+	  commit;
+    end loop;
+end;
+/

module/idoutils/include/db.h

@@ -129,6 +129,7 @@ int ndo2db_db_connect(ndo2db_idi *);
 int ndo2db_db_disconnect(ndo2db_idi *);
 
 int ndo2db_db_hello(ndo2db_idi *);
+int ido2db_thread_db_hello(ndo2db_idi *);
 int ndo2db_db_goodbye(ndo2db_idi *);
 int ndo2db_db_checkin(ndo2db_idi *);