Change ecl_fortio test to use test_work_area
Added function test_work_area_get_original_cwd()
Changed test config_path_elm to use test_work_area
Changed test job_torque_test to use test_work_area
Changed test enkf_runpath_list to use test_work_area
Changed test enkf_time_map to use test_work_area
Merge pull request #138 from joakim-hove/master

Changed remaining(?) tests to use test_work_area