This is done for potential and obvious file streams.

This closes #87.

- Implemented class template GeoPoint (see GeoLib/Point.h) and substituted class templates in the typedef.
- Some changes due to changed namespace in MathLib/Vector3.h and GeoLib/Color.h.

If the point to interpolate the value on is not located in any interval we choose either the first or the last interval and extrapolate the data. The algorithm for the determination of the interval is corrected.

- split setZero() to constructor and remove _is_initialized
- remove MPI part
- check LIS return code for each calling
- use stringstream instead of sprintf
- use INFO() instead of cout and printf for consistency

updating LisOption
- documentation
- add more solver and preconditioner type
- add matrix_type

update LisLinearSysetem
- impose prescribed values by penalty coefficient
- support matrix_type, solver_precon_arg in LisOption

use boost::property_tree in ISystemOfLinearEquation to pass configuration to solvers

This also removes uniqueVectorInsert(). The new function is working for all containers, which provide begin() and end() and typedef value_type.