If the shell is not specified using the '#!' notation, then the OS will
use '/bin/sh' to execute the script which may not produce the desired
results. In particular, /bin/sh on Solaris interprets '^' specially which
has an effect on the sed command that this patch touches.
Signed-off-by: Brandon Casey <drafnel@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>