Prepare for V9.0.0 release.

+ Set flash wait states on MSP432 demos.
+ Remove use of obsolete IO library in PIC32 demos.
+ Remove obsolete item left on stack of first task to run in the Cortex-M0 ports.
+ Correct IA32 GCC vPortExitCritical() implementation when configMAX_API_CALL_INTERRUPT_PRIORITY == portMAX_PRIORITY.

FreeRTOS/Source/include/FreeRTOS.h

@@ -103,6 +103,11 @@ extern "C" {
 /* Definitions specific to the port being used. */
 #include "portable.h"
 
+/* Must be defaulted before configUSE_NEWLIB_REENTRANT is used below. */
+#ifndef configUSE_NEWLIB_REENTRANT
+	#define configUSE_NEWLIB_REENTRANT 0
+#endif
+
 /* Required if struct _reent is used. */
 #if ( configUSE_NEWLIB_REENTRANT == 1 )
 	#include <reent.h>
@@ -727,10 +732,6 @@ extern "C" {
 	#define configINCLUDE_APPLICATION_DEFINED_PRIVILEGED_FUNCTIONS 0
 #endif
 
-#ifndef configUSE_NEWLIB_REENTRANT
-	#define configUSE_NEWLIB_REENTRANT 0
-#endif
-
 #ifndef configUSE_STATS_FORMATTING_FUNCTIONS
 	#define configUSE_STATS_FORMATTING_FUNCTIONS 0
 #endif