Carp with multiple arguments

Carp with multiple arguments

Subject: Carp with multiple arguments (and lack of tests)

carp/croak/confess are documented as similar to warn/die, but whereas
warn/die print multiple arguments, carp/croak/confess print only the
first.    Assuming that this is a bug rather than a feature, the following
patch corrects it.   (And if it _is_ a feature, the pod needs updating
instead, to explain it away.)

Trying to be polite, I thought I'd update the Carp tests to cover this
case.    But I couldn't find any Carp tests ...    I'll have a go
at rectifying this lacuna.   But not till tomorrow.

p5p-msgid: E0w3STZ-0007RW-00@taurus.cus.cam.ac.uk