Multiple tidy up and corrections preparing for release (#390)

* Update to the WolfSSL FIPS ready demo:  Add a debug break point into the configASSERT() implementation along with a comment telling users how to update the integrity check hash if they hit the breakpoint.

* Updates in the root directory:  Remove "New - Stream and Message Buffers.url" as the feature is no longer new, and edit the readme.md file as the repo now contains 'core' libraries in addition to 'FreeRTOS+' libraries.

* FreeRTOS-Plus/Source/Utilities:  Add readme files and links to documentation.

* Application-Protocols:  Add readme and URL links.

* Remove Index.html from the end of a URL in the readme.txt file.

* Demo-IP-Protocols:  Add readme.txt files and code comments saying the protocols are not intended for production use.

* coreMQTT:  Remove links to deprecated documentation, add readme and correct links to documentation.

* General:  Correct URLs in source files and .url files.

* Update readme.txt

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/Common/main.c

@@ -26,7 +26,7 @@
  */
 
 /***
- * See https://www.FreeRTOS.org/mqtt_lts/index.html for configuration and usage instructions.
+ * See https://www.FreeRTOS.org/coremqtt for configuration and usage instructions.
  ***/
 
 /* Standard includes. */
@@ -107,7 +107,7 @@ static UBaseType_t ulNextRand;
 int main( void )
 {
     /***
-     * See https://www.FreeRTOS.org/mqtt_lts/index.html for configuration and usage instructions.
+     * See https://www.FreeRTOS.org/coremqtt for configuration and usage instructions.
      ***/
 
     /* Miscellaneous initialization including preparing the logging and seeding

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Keep_Alive/READ_ME_INSTRUCTIONS.url

@@ -1,5 +0,0 @@
-[{000214A0-0000-0000-C000-000000000046}]
-Prop3=19,11
-[InternetShortcut]
-IDList=
-URL=https://www.freertos.org/mqtt_lts/

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Multitask/READ_ME_INSTRUCTIONS.url

@@ -1,5 +0,0 @@
-[{000214A0-0000-0000-C000-000000000046}]
-Prop3=19,11
-[InternetShortcut]
-IDList=
-URL=https://www.freertos.org/mqtt_lts/

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Multitask/readme.txt

@@ -0,0 +1,11 @@
+The multi threaded example creates an MQTT agent (or daemon task).  It is thread
+safe because only the agent task is allowed to access the coreMQTT API - hence
+the API is only accessed from one FreeRTOS task.  Other tasks and interrupts
+needing to interact with the MQTT agent do so through a thread safe queue.
+We are generalising this technique for future coreMQTT releases, which will have
+a re-usable agent component.
+
+! Plain text examples are for ease of evaluation only - product devices should
+! always use authenticated and encrypted communication.  Never send private or
+! sensitive data on an unencrypted connection.
+

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Mutual_Auth/READ_ME_INSTRUCTIONS.url

@@ -1,5 +0,0 @@
-[{000214A0-0000-0000-C000-000000000046}]
-Prop3=19,11
-[InternetShortcut]
-IDList=
-URL=https://www.freertos.org/mqtt_lts/

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Plain_Text/READ_ME_INSTRUCTIONS.url

@@ -1,5 +0,0 @@
-[{000214A0-0000-0000-C000-000000000046}]
-Prop3=19,11
-[InternetShortcut]
-IDList=
-URL=https://www.freertos.org/mqtt_lts/

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/MQTT_Serializer/READ_ME_INSTRUCTIONS.url

@@ -1,5 +0,0 @@
-[{000214A0-0000-0000-C000-000000000046}]
-Prop3=19,11
-[InternetShortcut]
-IDList=
-URL=https://www.freertos.org/mqtt_lts/

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/readme.txt

@@ -0,0 +1,15 @@
+The subdirectories of this directory contain multiple examples that demonstrate
+coreMQTT using in both single and multi-threaded scenarios, as well as with
+both plain text and authenticated and encrypted network interfaces.
+
+The multi threaded example creates an MQTT agent (or daemon task).  It is thread
+safe because only the agent task is allowed to access the coreMQTT API - hence
+the API is only accessed from one FreeRTOS task.  Other tasks and interrupts
+needing to interact with the MQTT agent do so through a thread safe queue.
+We are generalising this technique for future coreMQTT releases, which will have
+a re-usable agent component.
+
+! Plain text examples are for ease of evaluation only - product devices should
+! always use authenticated and encrypted communication.  Never send private or
+! sensitive data on an unencrypted connection.
+

FreeRTOS-Plus/Demo/coreMQTT_Windows_Simulator/readme_coreMQTT.url

@@ -2,4 +2,4 @@
 Prop3=19,11
 [InternetShortcut]
 IDList=
-URL=https://www.freertos.org/mqtt_lts/
+URL=https://www.freertos.org/coremqtt/index.html