slirp: rename exec_list

This list is not only used to handle command to execute on guest
connection, it can also redirect to an arbitrary object, such as a
chardev. Let's rename the struct and the field to "guestfwd".

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
6 files changed