'kill -l' outputs SIG prefix if job control not compiled in

[Martijn Dekker]

Normal bash:

$ kill -l 141
PIPE

Bash compiled with --enable-minimal-config --enable-alias:

$ kill -l 141
SIGPIPE

That SIG prefix shouldn't be there. (Enabling POSIX mode makes no
difference to the output.)

A look at the source tells me that, for some reason, the POSIXly correct
output of 'kill -l' was made dependent on job control being compiled in.
I don't see any reason for that, so unless I'm missing something, the
attached patch should fix it.

Thanks,

- M.

kill-l.patch
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