ERT-753: Added function to set all gen_kw values.
ERT-753: Added small job_queue_manager class
ERT-753: Call enkf_main_monitor_job_queue() unconditionally
ERT-753: Extracted job submission to function
ERT-753: Moved run_info implementation to separate file.
ERT-753: Removed all two level dereference on run_info.
ERT-753: Pass the run_info argument explicitly to all static functions.
ERT-753: Renamed run_info -> run_arg
ERT-753: Added FortIO context methods
ERT-753: Minor text change in error message.
ERT-753: Changed active/inactive cell #define
ERT-753: Removed unused functions
ERT-753: Refactored use of run_arg

This a large commit preparing the way for removing the run_arg pointer
from the enkf_state object.
ERT-753: Defined enkf_run_enum correctly
ERT-753: Big heap of changes
ERT-753: Improved gen_kw wrapping
ERT-753: Added RAW as possible distribution
ERT-753: Made run_arg implementation private
ERT-753: Added mount option to enkf_fs_create_fs()
ERT-753: Removed explicit fs argument in functions