Commits
Uwe L. Korn authored and Krisztián Szűcs committed 79d8bf2de3c
ARROW-4107: [Python] Use ninja in pyarrow manylinux1 build Author: Uwe L. Korn <uwelk@xhochy.com> Closes #3253 from xhochy/ARROW-4107 and squashes the following commits: 6ed02454 <Uwe L. Korn> ARROW-4107: Use ninja in pyarrow manylinux1 build