[boost] [build] please review the long standing pull request

Subject: [boost] [build] please review the long standing pull request
From: Konstantin Ivlev (tomskside_at_[hidden])
Date: 2017-05-10 09:31:29

Hello,

There's a 2 month old pull request
https://github.com/boostorg/build/pull/169.

Please review and let me know any feedback.