mixed up ctl files with SAS in coupled mode

[gsamson]

Context

When using SAS with OASIS, both SAS and OCE components try to write control prints in the same files (time.step, run.stat, timing.output), producing mixed up unusable control files.

Analysis

SAS and OCE are using the same file names to write their ctl prints

Fix

Append a "_sas" to ctl files created by SAS component to avoid this problem.
Add an optional argument to the timing_init routine to define a different file name when called by SAS

[gsamson]

In 13538:

change control print filenames when using SAS+OASIS and add optional input filename argument in timing_init routine; ticket #2528

[gsamson]

In 13555:

add missing timestep duration print in SAS timing.output and add missing timing capacity to OFF/nemogcm.F90; ticket #2528