ERT-611: Added ctime::inRange() metrhod.
ERT-611: Changed name of ctime class to CTime
ERT-602: Ensure that the ecl_rft date property is a Python datetime.date instance.
ERT-611 - Added BaseCValue class for wrapping non pointer types.
ERT-611 - Reimplemented CTime as a BaseCValue
ERT-611 - Converted c_long usage back to time_t
ERT-611 - Added missing CMakeLists update
ERT-611 - Implemented proper comparison operators (removed inRange)
Merge pull request #500 from joakim-hove/ERT-611

Ert 611 - ctime updates