+ New feature added: Task notifications.

+ Optimise Cortex-M4F ports by inlining some critical section macros.
+ Original ports used a #define to set the path to portmacro.h - that method has been obsolete for years and now all the old definitions have been moved into a separate header files called deprecated_definitions.h.
+ Cortex-M port now check the active vector bits against 0xff when determining if a function is called from an interrupt - previously only a subset of the bits (0x1f) were checked.
+ Add in new standard demo/test files TaskNotify.c/h and include the files in the simulator demos.
+ Update trace recorder code, and some demos to use the new version (more to do).
+ Introduce uxTaskPriorityGetFromISR().
+ Minor typo corrections.
+ Update MingW simulator demo to match the MSVC simulator demo.

FreeRTOS/Source/event_groups.c

@@ -276,6 +276,7 @@ BaseType_t xTimeoutOccurred = pdFALSE;
 
 	/* Check the user is not attempting to wait on the bits used by the kernel
 	itself, and that at least one bit is being requested. */
+	configASSERT( xEventGroup );
 	configASSERT( ( uxBitsToWaitFor & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
 	configASSERT( uxBitsToWaitFor != 0 );
 	#if ( ( INCLUDE_xTaskGetSchedulerState == 1 ) || ( configUSE_TIMERS == 1 ) )
@@ -421,6 +422,7 @@ EventBits_t uxReturn;
 
 	/* Check the user is not attempting to clear the bits used by the kernel
 	itself. */
+	configASSERT( xEventGroup );
 	configASSERT( ( uxBitsToClear & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
 
 	taskENTER_CRITICAL();
@@ -482,6 +484,7 @@ BaseType_t xMatchFound = pdFALSE;
 
 	/* Check the user is not attempting to set the bits used by the kernel
 	itself. */
+	configASSERT( xEventGroup );
 	configASSERT( ( uxBitsToSet & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
 
 	pxList = &( pxEventBits->xTasksWaitingForBits );