Update version for v2.1.0 release

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add G_IO_HUP handler for socket chardev

This is used to detect that the remote end has disconnected. Just call
tcp_char_disconnect on receiving this event.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
vhost-user: add multi queue support

Add a new command line parameter "queues".

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Increase hard-coded Virtio vring size from 256 to 8192.