Move d2x-rebirth/main/segment.c -> d2x-rebirth/main/segment.cpp
Move d2x-rebirth/main/gamepal.c -> d2x-rebirth/main/gamepal.cpp
Move d2x-rebirth/main/escort.c -> d2x-rebirth/main/escort.cpp
Move d1x-rebirth/main/custom.c -> d1x-rebirth/main/custom.cpp
Move d1x-rebirth/main/hostage.c -> d1x-rebirth/main/hostage.cpp
Move d1x-rebirth/main/snddecom.c -> d1x-rebirth/main/snddecom.cpp