  This paper has two parts. The first part is a review and extension of the
methods of integration of Leibniz algebras into Lie racks, including as new
feature a new way of integrating 2-cocycles (see Lemma 3.9).
  In the second part, we use the local integration of a Leibniz algebra h using
a Baker-Campbell-Hausdorff type formula in order to deformation quantize its
linear dual h^*. More precisely, we define a natural rack product on the set of
exponential functions which extends to a rack action on C^{\infty}(h^*).
