[Coin-ipopt] Ipopt release 3.3.4

[Andreas Waechter]

I just made a new release (3.3.4) for Ipopt.

Here the summary of the changes:

- Ipopt header files are not installed in
     include/coin
   and no longer in
     include/ipopt
   (make sure you change your makefiles if you are using Ipopt within your
    own code)
- improvements in the Matlab interface; here the changes as described by
   Peter Carbonetto who maintains the matlab interface:

   There have been several significant changes made to the MATLAB interface
   since the last release. The most important two changes are: 1) Following
   the "warm start" feature of IPOPT, you may pass in initial estimates for
   the Lagrange multipliers. 2) Callback routines for computing the
   objective, gradient (etc.) are now specified using function handles
   instead of strings. (Thanks to Marcus Brubaker at the University of
   Toronto for the initial suggestion.)

- minor fixes
- default for option dual_inf_tol now 1 (instead of 1e-4).  This makes
   Ipopt claim optimality more easily in cases where constraint
   qualifications do not hold.


A Happy New Year to everyone!


Andreas Waechter

IBM T.J. Watson Research Center
P.O. Box 218 (Rt. 134)
Yorktown Heights, NY 10598
USA