pimctl regression: 'log ?' and 'debug ?' commands don't work

[troglobit]

In the git master, as of da6f4c3, the pimctl commands to query debug systems and log levels does not work in FreeBSD with /bin/csh.

[troglobit]

Works if the ? character is escaped, because in csh:

"The character `?' matches any single character in a filename." -- https://docs.freebsd.org/44doc/usd/04.csh/paper-1.html#section7

Example:

root@beasdie:~/pimd # ./src/pimctl debug \?
all, asserts, bsr, crp, detail, igmp, interfaces, jp, kernel, mfc, mrt, neighbors, packets, pim, registers, rpf, rsrr, timers, traceroute
root@beasdie:~/pimd # ./src/pimctl debug 
none
root@beasdie:~/pimd # ./src/pimctl log \?
alert, crit, debug, emerg, err, error, info, none, notice, panic, warn, warning
root@beasdie:~/pimd # ./src/pimctl log 
notice
root@beasdie:~/pimd #