vcpkg/ports/polymorphic-value, branch 2020.04

vcpkg/ports/polymorphic-value, branch 2020.04 Forked from https://github.com/microsoft/vcpkg [Polymorphic-value] Add new port (#10267) 2020-03-05T21:58:02+00:00 nicole mazzuca mazzucan@outlook.com 2020-03-05T21:58:02+00:00 961378b1cbabe74b65886578ccb2d5bad215a70b * add polymorphic_value * make head work * fix the config file * address polymorphic_value review comments * use ${PORT} instead of literal name

* add polymorphic_value

* make head work

* fix the config file

* address polymorphic_value review comments

* use ${PORT} instead of literal name