Preparing for maintenance release:

Kernel source changes:
- Added xTaskNotifyStateClear() API function.
- Added the GCC Cortex-R port (existed for a while) into the main download.
- Improved the IAR RL78 port's handling of different memory model combinations.
- Removed some compiler warnings in heap_5.c.

Demo app changes:
- Added example use of xTaskNotifyStateClear() to the TaskNotify standard demo tasks.

FreeRTOS/Demo/PIC32MZ_MPLAB/RTOSDemo.X/nbproject/configurations.xml

@@ -84,7 +84,7 @@
     <conf name="PIC32MZ2048_SK" type="2">
       <toolsSet>
         <developmentServer>localhost</developmentServer>
-        <targetDevice>PIC32MZ2048ECM144</targetDevice>
+        <targetDevice>PIC32MZ2048ECH144</targetDevice>
         <targetHeader></targetHeader>
         <targetPluginBoard></targetPluginBoard>
         <platformTool>PKOBSKDEPlatformTool</platformTool>
@@ -621,7 +621,6 @@
         <property key="ToolFirmwareFilePath"
                   value="Press to browse for a specific firmware version"/>
         <property key="ToolFirmwareOption.UseLatestFirmware" value="true"/>
-        <property key="firmware.download.all" value="false"/>
         <property key="memories.configurationmemory" value="false"/>
         <property key="memories.dataflash" value="true"/>
         <property key="memories.eeprom" value="false"/>