Commits
Krisztián Szűcs authored and Wes McKinney committed 9d342ec4ffe
ARROW-3819: [Packaging] Update conda variant files to conform with feedstock after compiler migration Crossbow builds: - [kszucs/crossbow/build-403](https://github.com/kszucs/crossbow/branches/all?utf8=%E2%9C%93&query=build-403) - [kszucs/crossbow/build-404](https://github.com/kszucs/crossbow/branches/all?utf8=%E2%9C%93&query=build-404) - [kszucs/crossbow/build-405](https://github.com/kszucs/crossbow/branches/all?utf8=%E2%9C%93&query=build-405) - [kszucs/crossbow/build-406](https://github.com/kszucs/crossbow/branches/all?utf8=%E2%9C%93&query=build-406) - [kszucs/crossbow/build-407](https://github.com/kszucs/crossbow/branches/all?utf8=%E2%9C%93&query=build-407) Author: Krisztián Szűcs <szucs.krisztian@gmail.com> Closes #3368 from kszucs/conda_forge_migration and squashes the following commits: e0a5a6422 <Krisztián Szűcs> use --croot 3749a2ff9 <Krisztián Szűcs> git on osx; set FEEDSTOSK_ROOT ca7217d7f <Krisztián Szűcs> support channel sources from variant files 33cba7118 <Krisztián Szűcs> fix conda path on linux 2505828b7 <Krisztián Szűcs> fix task names 0c4a10bc3 <Krisztián Szűcs> conda recipes for python 3.7; compiler migration