Use boost::tie rather than std::tie so as not to require c++11.


git-svn-id: https://svn.salilab.org/imp/trunk@17456 e91f8c7b-0e32-4433-a9ac-4502d39a4eab
Back out change to per-cpp compilation. Closes issue #272.


git-svn-id: https://svn.salilab.org/imp/trunk@17457 e91f8c7b-0e32-4433-a9ac-4502d39a4eab
Fix typo.


git-svn-id: https://svn.salilab.org/imp/trunk@17458 e91f8c7b-0e32-4433-a9ac-4502d39a4eab