Remove try / catch that should be left to the toolkit user
Merge branch 'master' of github.com:SimonRit/RTK
Fix missing typename
Attempt to remove the memory leak in
rtkBackwardDifferenceDivergenceImageFilter and
rtkForwardDifferenceGradientImageFilter
Merge branch 'master' of github.com:SimonRit/RTK
BUG : fixes the segmentation fault at destruction of
rtkTotalVariationDenoisingBPDQImageFilter when the boundary condition
had not been overriden
STYLE: Fixing style
COMP: Warning
STYLE: Fixing style
ENH: ITK > 4.5.2 has changed the Allocate() signature causing allocating in RTK to fail.
ENH: Only sets the GPU flag has dirty when Allocating. This avoids doing an unnecessary memory transfer from  GPU -> CPU
COMP: Fixing export symbols for Windows DLL