Commits
Korn, Uwe authored and Kouhei Sutou committed e65663c45e4
ARROW-3670: [C++] Use FindBacktrace to find execinfo.h support Author: Korn, Uwe <Uwe.Korn@blue-yonder.com> Closes #2889 from xhochy/ARROW-3670 and squashes the following commits: 5df3580f <Korn, Uwe> ARROW-3670: Use FindBacktrace to find execinfo.h support