modified add to offer

added HW_QUEUE

modififed HW_LIST

modified

added HW_TREE

modified HW_HASH changed KeySet to EntrySet

modified HW_HASH List->Set

modified HW_HASH

added HW_HASH

modified HW_LIST

modified

modified HW_LiIST

modified

modified HW_List

added HW_LIST

added HW_Generic

modified

added PasswordChecker package

added HW_ABSTR_2