When using a macro, the macro parameters get evaluated
multiple times, which means that the rand() value compared
actually isn't the same that is used as return value.
This makes sure that clipping works as intended for the
random tests.
1, ref_list_mgr_svc.cpp, Ln314: fix a wrong DeleteLTRFromLongList which should not be used under screen strategy
2, ref_list_mgr_svc.cpp, Ln910: remove the frame which is furthest in distance to the current frame in ref list
3, wels_preprocess.cpp: use scene LTR ref list when the current frame is scene LTR
-, ref_list_mgr_svc.cpp, Ln811: add DEBUG trace
reviewed at: https://rbcommons.com/s/OpenH264/r/870/
