prm dul release 5108 rc3

changlogs:

export ddl  now supports multiple column primary key ,   nvarchar length no longer uses byte semantics

commons-io-2.6.jar now backport to commons-io-2.4.jar , asm clone now works 

change author laohu's contact info 

https://zcdn.parnassusdata.com/DUL5108rc3.zip