Start of module "NonLinear". We start out of cminpack-1.0.2

(http://devernay.free.fr/hacks/cminpack.html)
The first test is adapted from the example/ directory.
Some stuff is hard coded for our initial tests.

unsupported/Eigen/src/NonLinear/CMakeLists.txt

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+FILE(GLOB Eigen_NonLinear_SRCS "*.h")
+
+INSTALL(FILES
+  ${Eigen_NonLinear_SRCS}
+  DESTINATION ${INCLUDE_INSTALL_DIR}/unsupported/Eigen/src/NonLinear COMPONENT Devel
+  )

unsupported/Eigen/src/NonLinear/MathFunctions.h

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+// This file is part of Eigen, a lightweight C++ template library
+// for linear algebra.
+//
+// Copyright (C) 2009 Thomas Capricelli <orzel@freehackers.org>
+//
+// Eigen is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 3 of the License, or (at your option) any later version.
+//
+// Alternatively, you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of
+// the License, or (at your option) any later version.
+//
+// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License and a copy of the GNU General Public License along with
+// Eigen. If not, see <http://www.gnu.org/licenses/>.
+
+#ifndef EIGEN_NONLINEAR_MATHFUNCTIONS_H
+#define EIGEN_NONLINEAR_MATHFUNCTIONS_H
+
+#include <cminpack.h>
+
+#endif // EIGEN_NONLINEAR_MATHFUNCTIONS_H