Daemon - improve robustness of tau aliveness check

We now test for both the liveness of the comms thread *and* the liveness of the boot process.

Author: samaaron

app/server/ruby/bin/daemon.rb

@@ -550,7 +550,7 @@ def initialize(ports)
             recv_osc = lambda do
               size_str = client.recvfrom(4, Socket::MSG_WAITALL)[0].chomp
               size = size_str.unpack('N')[0]
-              raise "Critical Error: Bad TCP OSC size received from Tau #{size_str}" unless size
+              raise "Critical Error: Bad TCP OSC size received from Tau #{size_satr.inspect}" unless size
               data_raw = client.recvfrom(size, Socket::MSG_WAITALL)[0].chomp
               osc_decoder.decode_single_message(data_raw)
             end
@@ -604,7 +604,7 @@ def initialize(ports)
       end
 
       def process_running?
-        @tau_comms_thread.alive?
+        @tau_comms_thread.alive? || super
       end
 
       def kill