Commits
Uwe L. Korn authored and Antoine Pitrou committed c05687dac02
ARROW-4946: [C++] Support detection of flatbuffers without FlatbuffersConfig.cmake Author: Uwe L. Korn <xhochy@users.noreply.github.com> Author: Korn, Uwe <Uwe.Korn@blue-yonder.com> Closes #3973 from xhochy/ARROW-4946 and squashes the following commits: 692bd863d <Uwe L. Korn> Add comment about FlatbuffersAlt 897ba5e6c <Korn, Uwe> ARROW-4946: Support detection of flatbuffers without FlatbuffersConfig.cmake