Add resource management example.

	modified:   src/c/CMakeLists.txt
	new file:   src/c/resource.c
Set up  VTK examples.

Add a new source directory, used to develop  VTK C++ examples.

	modified:   CMakeLists.txt
	modified:   src/CMakeLists.txt
	new file:   src/vtk/CMakeLists.txt
	new file:   src/vtk/vtk_example_01.cxx
Improve the vtkChartXY example.

- show the legend
- show the sine function
- colorized plots

	modified:   src/vtk/vtk_example_01.cxx
Update the CMake script of the VTK examples.

It tries the create an executable for each C++ source file following,
this globbing expression:
	vtk_example_*.cxx
as 'vtk_example_01.cxx'

	modified:   src/vtk/CMakeLists.txt
Add a VTK Geovis example.

	new file:   src/vtk/vtk_example_02.cxx
Change the location of all executable inside the binary directory.

	modified:   CMakeLists.txt
Set up a 2nd example of the Geovis module.

	new file:   src/vtk/vtk_example_03.cxx
Add a NetCDF file a data example file.

	new file:   data/LOA_CE370_L1B-PR2_2012-03-20T00-00-00_1440_V1-00.nc
Initialize a vtkNetCDFReader example.

	new file:   src/vtk/vtk_example_04.cxx
Add a new 'FindNetCDF.cmake' file purposes to find the NetCDF library easily.

Download from url "https://raw.github.com/jedbrown/cmake-modules/master/FindNetCDF.cmake".

	new file:   config/cmake/FindNetCDF.cmake
Rewrite the 'FindNetCDF.cmake' script.

It provides 2 variablesi only:
	- NETCDF_INCLUDE_DIRS
	- NETCDF_LIBRARIES

	modified:   config/cmake/FindNetCDF.cmake
Add the NetCDF variable reading to this example.

This example extract convenient pr2 data from the NetCDF file.

	modified:   src/vtk/CMakeLists.txt
	modified:   src/vtk/vtk_example_04.cxx