[Osi] logLevel_ not kept (OsiClpSolverInterface)

[fmargot at andrew.cmu.edu]

Consider the code:

OsiClpSolverInterface *clp;

// A

clp->messageHandler()->setLogLevel(0);

// B

clp->initialSolve();

// C

If you print

clp->handler_->logLevel_  and clp->modelPtr_->handler_->logLevel_

at point A, both are 1. 
At point B, the first one is zero and the second one is 1
At point C, both are 1.

Obviously, initialSolve() should not modify the logLevel set by the
user. The problem is that  setLogLevel() modifies only
clp->handler_->logLevel_ and initialSolve() looks at
clp->modelPtr_->handler_->logLevel_ when saving the logLevel.

A ticket has been filed (ticket #65).

Francois