Change datatype of ZPD to fload/double#100

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devymex wants to merge 2 commits intostructureio:developfrom devymex:develop

+26-26

Commits on Nov 17, 2016

Change datatype of ZeroPlaneDistance from integer to real;
devymex
committed
Fix wrong value name in propIds (should be XN_STREAM_PROPERTY_ZERO_PLANE_PIXEL_SIZE)
devymex
committed