Merge pull request #156 from bottero/devel

I added an example of the use of AXISYM option
renamed EXAMPLES/ExampleAXISYM to EXAMPLES/axisymmetric_case_AXISYM_option
added Paul Cristini's Python script to generate a thermocline
Merge pull request #158 from komatits/devel

added Paul Cristini's Python script to generate a thermocline