Merge pull request #190 from joakim-hove/iterated-smoother

Module build cleanup
Exported property analysis config min number of realisations
Added has_element() @classmethod to basecenum defintion
Added functions for enum introspection of analysis_module flags
Added python enum implementation of analysis module flag options
Importing libanalysis as ert.analysis
Refactored analysis_module_get_option -> analysis_module_check_option
Removed printf()
analysis_get_option -> analysis_check_option + Change in check_option() for combined flags