sound → battlescape Relation

File in client/sound	Includes file in client/battlescape
s_mix.cpp	cl_battlescape.h
s_mix.cpp	cl_camera.h
s_mix.cpp	cl_localentity.h
s_music.cpp	cl_battlescape.h
s_music.cpp	cl_camera.h
s_music.cpp	cl_localentity.h