2) Fix a bug for Numeric Opcode creation.
3) Add AssignQuestionId to assign QuestionId to be a non-zero value always.
4) Add in Check in UefiRegisterPackageList to same package list to be registered for more than once. (Framework BDS has this behavior).
5) Fix a bug in HiiNewString
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5822 6f19259b-4bc3-4df7-8a09-765794883524