Reset the expected block time variable when a task is suspended or deleted in case the value held in the variables was associated with the task just suspended or deleted.
Add a task pre-delete hook to allow the insertion of any port specific clean up when a task is deleted.
Increase use of 'const' qualifiers.
Add vPortCloseRunningThread() into the Win32 port layer to attempt to allow Windows threads to be closed more gracefully when a task deletes itself.
Add configCLEAR_TICK_TIMER_INTERRUPT into PIC32 port layer to allow the timer configuration to be changed without any edits to the port layer being required.
Add prvTaskExitError() into the PIC32 port layer to trap tasks that attempt to exit from their implementing function.
Provide the ability to trap interrupt stack overflows in the PIC32 port.
Radically improve the timing in the Win32 simulator port layer.
Add portYIELD_FROM_ISR() macros to Cortex-M ports. The new macro just calls the exiting portEND_SWITCHING_ISR() macro.
Remove code from the MSVC port layer that was left over from a previous implementation and become obsolete.
