vcpkg/ports/yasm, branch 2020.01

vcpkg/ports/yasm, branch 2020.01 Forked from https://github.com/microsoft/vcpkg [yasm] Add new port (#7478) 2019-08-13T21:12:28+00:00 Lily 47812810+wangli28@users.noreply.github.com 2019-08-13T21:12:28+00:00 86ec91b6ee56ab59a03d966fc3e38e74f4382874 * [yasm] Add new port * [yasm] Add new port * Remove patch; Use port var; use vcpkg_add_to_path

* [yasm] Add new port

* [yasm] Add new port

* Remove patch; Use port var; use vcpkg_add_to_path