Conditionally include an include file that's not available on Mac OS.
Conditionally include an include file that's not available on Mac OS.

Change-Id: I473721c352bf16f08c141c3040efddf799e5a666

treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst,treadstoneproject/artinst