Typedefs in 321/server

• areanode_t 321/server/sv_world.c:47
• challenge_t 321/server/server.h:155
• client_frame_t 321/server/server.h:90
• client_t 321/server/server.h:135
• moveclip_t 321/server/sv_world.c:474
• redirect_t 321/server/server.h:242
• server_state_t 321/server/server.h:39
• server_static_t 321/server/server.h:181