add virtual dtors everywhere (memory leaks still remain)
(Un-)BinnedDataSet must only clamp fixed variables
fix incorrect (or well, uncommon) initialization order for members of Variable

(fixes -Wall warnings)
GooPdf - fix memory leak
allow building without cuda sdk installed for main project (examples still missing)
detect and add root include dirs for main project
use proper function wrapper macros in ThreeGaussResolution_Aux