Recognizing \r in a regex is something GNU sed will do, but other sed
implementation's won't (e.g. BSD sed on OS X).  Instead of two sed
invocations, use a single Perl script to split output into headers
and body.
Signed-off-by: NBrian Gernhardt <brian@gernhardtsoftware.com>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>