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eschema, pcbnew and cvpcb did not find libraries when they were in the default library path, but in a subdirectory

Use wxWindowDC instead of wxClientDC as function parameters since we cannot assume that wxPaintDC inherits from wxClientDC

cvpcb:	set flag wxFRAME_FLOAT_ON_PARENT when create the footprint 3D frame and the display frame

MAYBE_RESIZE_BORDER field restored to cleaningoptions_dialog.h