Make GetVariable() check Data parameter, and return EFI_INVALID_PARAMETER if it is NULL and DataSize is enough, according to UEFI spec.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2061 6f19259b-4bc3-4df7-8a09-765794883524
2)Modify the related files to fit for the runtime services UpdateCapsule/QueryCapsuleCapabilities defined in UEFI2.0 spec
3)Modify the related files to fit for the runtime services QueryVariableInfo defined in UEFI2.0 spec
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@790 6f19259b-4bc3-4df7-8a09-765794883524