This is getting rediculous.
Our own native calls IClient::ClientPrintf to print stuff to the demo
console.
The engine's Host_Client_Printf uses the CGameClient vtable's
ClientPrintf. To catch the output of the "status" command, we have to
hook both vtables on linux...
Windows casts to IClient in Host_Client_Printf, so no need to do that
there.
CHLTVServer::StartRecording is called directly in tv_record on linux,
ignoring the vtable.
Add a detour on linux for these two functions, so we always notice when
recording starts.
Windows actually always uses the vtable to get the function address, so
we don't need to detour anything on windows.
Keep the instances in seperate wrappers to clear up the hooks. This
allows for some OnServerStart and OnServerShutdown forwards.
To prepare support for relay servers, CHLTVServer::Shutdown is hooked to
detect shutdown instead of relying on the director unregistering the
instance.
