GitLab

* Avoid processing twice indices of values to round
* Replace the rounding set with a priority queue
* Remove unnecessary "old index" map
* Reformat MISolver.cc to conform to the style guidelines and add missing ; after DEB_* statements
* Remove MISolverT.hh
* Move private symbols to the cc file
* Improve code quality, formatting and const-correctness of IterativeSolverT
* Improve code quality and formatting for MISolver::update_solution

- corrected residual norm to coincide between GS and CG
- fill-in minimizing reordering of constraints
- faster matrix update while rounding
- multiple rounding (up to threshold)
- several minor improvements

git-svn-id: http://www.openflipper.org/svnrepo/CoMISo/trunk@42 1355f012-dd97-4b2f-ae87-10fa9f823a57