The changes over HM-16.5-SCM4.1 are
     - Migration to HM-16.6

SCC: Disabled and removed the macro SCM_IBC_CLEANUP_IDENTICAL_RDO. It was only used to guarantee that r4451 can generate identical mode decision results as r4450.

SCC : Integration JCTVC-T0056 to restrict IBC within the current tile. Related bug fixes are also included < patch from Peter.Chuang@mediatek.com>

original Patch-By: Minhao Tang <tmh920811@gmail.com>
with modification from karls

SCC: Fix a bug when multiple-slice is used together with RPLM. Patch from GISQUET Christophe <Christophe.Gisquet@crf.canon.fr>.

- createExplicitReferencePictureSetFromReference() was using the same RPS for source and destination in not obvious way

SCC: Removed the guided macro SCM_S0067_IBC_FULL_1D_SEARCH_FOR_PU, and keeping SCM_S0067_IBC_FULL_1D_SEARCH_FOR_PU as a constant.

SCC: Removed the guided macro SCM_T0048_PLT_PRED_IN_PPS_REFRESH, and keeping SCM_T0048_PLT_PRED_IN_PPS_REFRESH as a constant.