Typedefs starting with `c' in src

• card_t src/doomdef.h:276
• castinfo_t src/f_main.c:102
• ceiling_e src/p_spec.h:279
• ceiling_t src/p_spec.h:292
• channel_t src/sound.h:50
• cheat_e src/am_main.c:37
• column_t src/doomdata.h:159
• control_t src/o_main.c:35