Correct comment about 'read' blocking for data--it seems that 'recv' actually doesn't block after all.

git-svn-id: svn+ssh://oldsvn/home/mlalondesvn/svn/cral@112 3ee9b42a-b53c-0410-a25e-f0b6218d5d5b

branches/follower/wiz810mj/src/demo/WizDemo4/WizDemo4.pde

@@ -252,7 +252,12 @@ int NetworkConnection::listen() { // TODO: Make private or protected?
 byte NetworkConnection::read() {
   /*
 
-     Note: This blocks until a byte is available.
+     Note: I thought 'recv' blocked until data was available,
+           but it currently seems not to block after all.
+           However, because I'm seeking to match the 'Serial.read'
+           behaviour we don't actually want to block anyway,
+           so we'll ignore it for the moment and handle things
+           ourself for now.
 
    */
   uint8_t theByte;