Kernel changes:

+ Support tickless idle when configUSE_PREEMPTION is 0 (previously tickless idle was only supported when the pre-emptive scheduler was being used).
+ If a stack was statically allocated, then don't try freeing it if the TCB cannot be allocated.
+ Remove use of INCLUDE_xEventGroupsSetBitsFromISR() pre-processor macro, as it was not tested anyway.

Demo app changes:

+ Updated SAM4L Atmel Studio project to use Atmel Studio 7.

FreeRTOS/Source/portable/RVDS/ARM_CM3/portmacro.h

@@ -185,6 +185,8 @@ not necessary for to use this port.  They are defined so the common demo files
 /* portNOP() is not required by this port. */
 #define portNOP()
 
+#define portINLINE __inline
+
 #ifdef __cplusplus
 }
 #endif