Memstat release version

[hutch--]

This final version displays Installed, Free and Used memory. Minimised to the task bar it displays the Free memory from the title bar of the app. I have wanted to keep the real time change as it is designed to track applications that use large amounts of memory where you need to track how much is available. It polls at 250 ms which seems to be fast enough and when minimised to the task bar, it enter low priority mode to improve efficiency. It was not designed to be eye candy, it is finally a tool for programmers and among the design considerations was keeping the interface as small as possible.