3853 __cplusplus change and headers incompatipility with clang
Reviewed by: Albert Lee <trisk@nexenta.com>
Reviewed by: Andrew Stormont <andyjstormont@gmail.com>
Reviewed by: Cedric Blancher <cedric.blancher@googlemail.com>
Reviewed by: Ian Collins <ian@ianshome.com>
Reviewed by: Don Cragun <dcragun@sonic.net>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@nexenta.com>