fix delete bug:  
1.add reverseIndex for delete completeness.
2.add waterLine for re-add correctness
Merge branch 'master' of github.com:guokr/simbase

Conflicts:
	src/tests/java/com/guokr/simbase/tests/SimEngineTests.java
modifity:before SimTable unittest move to new file,so I delete
corresponding code in SimEnigneTests.java
fix reload bug:
cause by clone,which was no handling data that has been deleted.  
and improper self-increment operator
Merge pull request #12 from zjjott/master

merge、fix and add unittest