Minimizer for arbitrary one dimensional functions.
Implemented using GSL, for detailed description see:
<A HREF="http://www.gnu.org/software/gsl/manual/html_node/One-dimensional-Minimization.html">GSL online doc</A>
The algorithms uspported are only bracketing algorithm which do not use derivatives information.
The algorithms which can be choosen at construction time are GOLDENSECTION, whic is the simplest method
but the slowest and BRENT (the default one) which combines the golden section with a parabolic interpolation.
This class does not support copying
@ingroup Min1D