>From http://pubs.opengroup.org/onlinepubs/9699919799/utilities/kill.html:
When the -l option is specified, the symbolic name of each signal shall be written in the following format: "%s%c", <signal_name>, <separator> where the <signal_name> is in uppercase, without the SIG prefix, and the <separator> shall be either a <newline> or a <space>. For the last signal written, <separator> shall be a <newline>. "kill -l" currently prints a table with each signal preceded by its number and with the SIG prefixes, even with POSIXLY_CORRECT.
