Fix client to allow multiple to clients to run concurrently for WIN32

Fix client to allow multiple to clients to run concurrently for WIN32

Remove the names for the bounce_empty, bounce_full and ctrl_c_event
events. The named events were being shared between all clients running
on a WIN32 machine which created the affect of disconnecting a client
when an input event occurred in another client.  Broken in commit
f082ef9f (v4.3.11).