Move THCTensor_(lognormal) to ATen (#21299)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21299
ghimport-source-id: 2c63f289f02087f023feda8bff6b90ed49737889
Reviewed By: jerryzh168
Differential Revision: D15632930
Pulled By: ezyang
fbshipit-source-id: 85c17cdca486b46942c5b500e4fd4d95bb5657f9
