Commits
Uwe L. Korn authored and Wes McKinney committed 935279091f3
ARROW-422: IPC should depend on rapidjson_ep if RapidJSON is vendored Author: Uwe L. Korn <uwelk@xhochy.com> Closes #239 from xhochy/ARROW-422 and squashes the following commits: 1545012 [Uwe L. Korn] ARROW-422: IPC should depend on rapidjson_ep if RapidJSON is vendored