Update FairMQStateMachine & introduce FairMQChannels

Organize sockets as a map of vectors of FairMQChannels.

Update FairMQStateMachine by removing SETTINGINPUT, SETTINGOUTPUT,
BIND and CONNECT states and by adding INITIALIZING_TASK, RESETTING_TASK
and RESETTING_DEVICE states. Run states functions in their own thread.

fairmq/CMakeLists.txt

@@ -69,7 +69,9 @@ set(SRCS
   "FairMQTransportFactory.cxx"
   "FairMQMessage.cxx"
   "FairMQSocket.cxx"
+  "FairMQChannel.cxx"
   "FairMQDevice.cxx"
+  "FairMQPoller.cxx"
   "devices/FairMQBenchmarkSampler.cxx"
   "devices/FairMQSink.cxx"
   "devices/FairMQBuffer.cxx"
@@ -79,7 +81,6 @@ set(SRCS
   "options/FairProgOptions.cxx"
   "options/FairMQProgOptions.cxx"
   "options/FairMQParser.cxx"
-  "FairMQPoller.cxx"
   "examples/req-rep/FairMQExampleClient.cxx"
   "examples/req-rep/FairMQExampleServer.cxx"
 )
@@ -150,10 +151,10 @@ GENERATE_LIBRARY()
 
 set(Exe_Names
   bsampler
+  sink
   buffer
   splitter
   merger
-  sink
   proxy
   example_client
   example_server
@@ -172,10 +173,10 @@ set(Exe_Names
 
 set(Exe_Source 
   run/runBenchmarkSampler.cxx
+  run/runSink.cxx
   run/runBuffer.cxx
   run/runSplitter.cxx
   run/runMerger.cxx
-  run/runSink.cxx
   run/runProxy.cxx
   examples/req-rep/runExampleClient.cxx
   examples/req-rep/runExampleServer.cxx