SpatialSubtractiveNormalization:clearState: clear cached size to mak…

…e Travis happy (#1284)

* replace lon glong types with size_t

Work around bug in msvc compiler in win32 mode

* fix condition logic for coef recalculation in  SpatialSubtractiveNormalization

Existing conditional expression always verified, resulting in overhead
as coeffcients were recalculated every time. Fix and simplify expression
by using chached input size.

* SpatialSubtractiveNormalization:clearState: clear cached size to make Travis happy

SpatialSubtractiveNormalization.lua

@@ -109,6 +109,7 @@ function SpatialSubtractiveNormalization:updateGradInput(input, gradOutput)
 end
 
 function SpatialSubtractiveNormalization:clearState()
+   self._inpsz = nil
    if self.ones then self.ones:set() end
    if self._coef then self._coef:set() end
    self.meanestimator:clearState()