Revert PR #1719; the change makes it impossible to run the programs being built if the host OS is older than the default target of "the SDK".
Revert PR #1719; the change makes it impossible to run the programs being built if the host OS is older than the default target of "the SDK".

This reverts commit c1ea28f4cfd7a199601db388987b49af8c6311ba, reversing
changes made to c70296ec28d954ccfe105c23287027012446c86a.

deweerdt/h2o,devnexen/h2o,deweerdt/h2o,cwyang/h2o,yannick/h2o,devnexen/h2o,devnexen/h2o,devnexen/h2o,lkwg82/h2o,cwyang/h2o,lkwg82/h2o,lkwg82/h2o,lkwg82/h2o,h2o/h2o,yannick/h2o,deweerdt/h2o,cwyang/h2o,h2o/h2o,lkwg82/h2o,yannick/h2o,cwyang/h2o,h2o/h2o,h2o/h2o,yannick/h2o,lkwg82/h2o,h2o/h2o,cwyang/h2o,cwyang/h2o,yannick/h2o,deweerdt/h2o,devnexen/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,h2o/h2o,lkwg82/h2o,devnexen/h2o,cwyang/h2o,yannick/h2o,deweerdt/h2o,yannick/h2o,deweerdt/h2o,devnexen/h2o,h2o/h2o,deweerdt/h2o,h2o/h2o,cwyang/h2o,devnexen/h2o,lkwg82/h2o,deweerdt/h2o,deweerdt/h2o,yannick/h2o,lkwg82/h2o