Follow UEFI spec to add the definition for EFI_SPECIFICATION_VERSION, and update other table version to refer to it. Remove the “/D TIANO_RELEASE_VERSION=0x00080006” option in Nt32Pkg DSC file, since it’s not used in source code.

Signed-off-by: Shumin Qiu <shumin.qiu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/MdePkg@14900 6f19259b-4bc3-4df7-8a09-765794883524