core: vhost contexts are shared_ptr managed now.
core: vhost contexts are shared_ptr managed now.

i had to do this in order to get a flexible server-name aliasing support

christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,christianparpart/x0,xzero/x0