All symbols starting with `c' in 321/server

• challenge_t 321/server/server.h:155
• ClearLink 321/server/sv_world.c:64
• client_frame_t 321/server/server.h:90
• client_state_t 321/server/server.h:80
• client_t 321/server/server.h:135
• contents 321/server/sv_world.c:460
• CopyFile 321/server/sv_ccmds.c:192