Typedefs starting with `c' in djgppdoom

• card_t src/doomdef.h:174
• castinfo_t src/f_finale.c:339
• ceiling_e src/p_spec.h:490
• ceiling_t src/p_spec.h:511
• channel_t src/s_sound.c:105
• cheat_t src/d_player.h:78
• cliprange_t src/r_bsp.c:86
• column_t src/r_defs.h:291