Few corrections to ticket src:ticket:263

[arango]

Corrected few bug to the major upgrade in ​src:ticket:263

• Corrected ad_convolution.F at line 764: the END IF needs to be before the endif CPP token.
• Corrected CPP directive in tl_convolution.F at line 755.
• Corrected reporting of NLpenalty in w4dpsas_ocean.h.
• Changed model flag from iRPM to iNLM in obs_cost.F during the computation of NLpenalty in the W4DPSAS algorithm.
• Corrected the computation of minimum and maximum tile fractional coordinates used to process the observations. Added new routine get_domain in get_bounds.F to facilitate the computation of such values. Notice that different ranges are computed for FULL_GRID option wich includes interior and boundary points. Also, mod_ncparam.F was modified to compute such values. It still have activated the incorrect computation.
• Fixed few problems in inp_par.F when reporting HdecayF. I Also removed the MPI reduction to the DOMAIN(ng) structure. It is not longer needed.
• Corrected few typos in the internal documentation.

Many thanks to Gregoire Broquet for reporting some of these problems.