Added some memory deallocation to allow SimpleGUI instances to be created / destroyed#2

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onedayitwillmake wants to merge 2 commits intovorg:masterfrom onedayitwillmake:master

+44-10

Commits on Oct 11, 2011

Addeed functionality to remove controls, and unregister events in destructor
onedayitwillmake
committed
Added value to label for int and float
onedayitwillmake
committed