Conflicts:
	codec/encoder/core/inc/svc_motion_estimate.h
	codec/encoder/core/inc/wels_func_ptr_def.h
	codec/encoder/core/src/encoder_ext.cpp
	codec/encoder/core/src/svc_base_layer_md.cpp
	codec/encoder/core/src/svc_motion_estimate.cpp
merge refactor5