Blank module and first draft of solver API.

At this point we have a skeleton of a new module (optim) which can
barely compile properly (unlike previous commit). Besides, there is a
first draft of solver and lpsolver (linear optimization solver) in this
commit.

modules/optim/include/opencv2/optim.hpp

@@ -0,0 +1,86 @@
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+
+#ifndef __OPENCV_OPTIM_HPP__
+#define __OPENCV_OPTIM_HPP__
+
+#include "opencv2/core.hpp"
+#include "opencv2/core/mat.hpp"
+
+/*! \namespace cv
+ Namespace where all the C++ OpenCV functionality resides
+ */
+namespace cv
+{
+
+/* //! restores the damaged image areas using one of the available intpainting algorithms */
+class Solver : public Algorithm /* Algorithm is the base OpenCV class */
+{
+  class Function
+  {
+  public:
+        virtual ~Function();
+        virtual double calc(InputArray args) const = 0;
+        //virtual double calc(InputArray args, OutputArray grad) const = 0;
+  };
+
+  // could be reused for all the generic algorithms like downhill simplex.
+  virtual void solve(InputArray x0, OutputArray result) const = 0;
+
+  virtual void setTermCriteria(const TermCriteria& criteria) = 0;
+  virtual TermCriteria getTermCriteria() = 0;
+
+  // more detailed API to be defined later ...
+
+};
+
+class LPSolver : public Solver
+{
+public:
+     virtual void solve(InputArray coeffs, InputArray constraints, OutputArray result) const = 0;
+     // ...
+};
+
+Ptr<LPSolver> createLPSimplexSolver();
+}// cv
+
+#endif