General:
+30Aug08
+kes Another try at fixing Vbackup. It looks much better this time.
+ Disable file index sanity check in FD with value stored in
+ attributes record because with Vbackup the File Index gets
+ changed, but not the attributes record.
+ Enhance some debug code.
+ Fix handling of re-indexing records that are copied in Vbackup.
29Aug08
+kes Made level_to_str() know about Virtual backup.
+kes Set correct Virtual backup write pool.
+kes Fix compile warning in new dbcheck port code.
kes Fix migration code broken by previous virtual backup fix.
28Aug08
kes Fix problem of Virtual backup not writing a sequential FileIndex.