iterate to convergence, all lines
Currently the trunk still checks the convergence of only a handful of lines, around conv_itercheck.cpp:74. We want to check all lines by activating conv.lgAllTransitions at conv_itercheck.cpp:222. Experiments around 2014 May had few line botches although some sims took more iterations due to detection of unconverged lines. Robin found several problems, fixed around r9220, r9222, r9223, r9225, r9230, r231, r9232, r9233
current status is "pretty good". There are few physics botches in the test suite, but more performance botches. some sims did not converge, taking the default limit of 10.
This replaces ticket #224 (closed) which was an early take on the problem. It may not be a problem today. This ticket summarizes where we are. The problem described in the original ticket is no longer present.