[Ipopt] Ipopt release 3.11.7

[Stefan Vigerske]

Hi,

I just created a new Ipopt maintenance release.

Here is a list of changes (r1234 stands for a related svn changeset, 
#123 for a ticket number in the trac bugtracking system):

- adapted PARDISO parameters when using MKL PARDISO to be close to
   using Basel PARDISO
- added options pardiso_max_iterative_refinement_steps and
   pardiso_order; the former defaults to 1 in case of MKL PARDISO, which
   may help on instances that otherwise fail due to numerical issues
- removed duplicate code in IpQualityFunctionMuOracle.cpp (by galago)
   [#225, r2445]
- fixed bug in triplet to csr converter (by galago) [#226, r2446]
- minor changes in buildsystem

The source tarballs should be available tomorrow.

Enjoy,
Stefan