Event Groups: Convert the 'clear bits from ISR' function into a pended function to fix reentrancy issue.

Event Groups: Ensure the 'wait bits' and 'sync' functions don't return values that still contain some internal control bits.

FreeRTOS/Source/timers.c

@@ -363,7 +363,7 @@ DaemonTaskMessage_t xMessage;
 #endif
 /*-----------------------------------------------------------*/
 
-const char * const pcTimerGetTimerName( TimerHandle_t xTimer )
+const char * pcTimerGetTimerName( TimerHandle_t xTimer )
 {
 Timer_t *pxTimer = ( Timer_t * ) xTimer;