BaseTools: replace Sdict with OrderedDict in UPT

BaseTools: replace Sdict with OrderedDict in UPT

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=1504

V2: import OrderredDict as Sdict in Misc.py instead
updating all the py files.

Sdict class is removed on the commit
174a9d3cc8f74f7a731ac5f16ce6864c8eb359ec
but there are still some py files import it.

This patch is to use collections.OrderedDict to replace Sdict.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>