Macros starting with `c' in bsd/kern

• CCLASS bsd/kern/tty.c:163
• CLAMP bsd/kern/tty.c:2315
• CLR bsd/kern/mach_process.c:99
• compat bsd/kern/init_sysent.c:203
• compatp bsd/kern/init_sysent.c:204
• COUNT bsd/kern/kern_lock.c:76
• cttyvp bsd/kern/tty_tty.c:90