Fix bad tests for sub-BSD OS detections that resulted in sub-BSD flavors being detected but appearing that the super-BSD was not detected.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85971 b8fc166d-592f-0410-95f2-cb63ce0dd405
Adjustments for building tests with dynamically generated header links for modular SVN layout.

git-svn-id: http://svn.boost.org/svn/boost/trunk@85974 b8fc166d-592f-0410-95f2-cb63ce0dd405