tp: Make the header file compilable on Windows
tp: Make the header file compilable on Windows

MSVC does not support pthread. For this reason, we needed to
include the compatibility header in monkey, not <pthread.h>.

This patch fixes it thusly.

Signed-off-by: Fujimoto Seiji <ef879192bb1e41d519c82cf76440dc8e9a530806@ceptord.net>

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