fixed windows build
fixed windows build

[git-p4: depot-paths = "//sw/gpgpu/nvbio/internal/": change = 18311764]

kimrutherford/nvbio,NVlabs/nvbio,kimrutherford/nvbio,NVlabs/nvbio,kimrutherford/nvbio,NVlabs/nvbio,NVlabs/nvbio,kimrutherford/nvbio