Consolidating public release with research branches

[arango]

Updated public repository release, so it is synchronized with changes in several of my research branches:

• Updated mod_netcdf.F to include more information if a reading or writing error occurs. It now has the specific NetCDF library error by using the string from nf90_strerror(status).

• Changed some of the formatted integer fields to I0. The I0 edit descriptor was introduced in the 2003 Fortran Standard and produce a result with many digits as are necessary to represent the integer value. I love this capability. Well done Fortran Gods!

• Corrected a small bug in timers.F routine wclocks_off. We need have the following USE statement:

  #ifdef DISTRIBUTE
  !
        USE distribute_mod, ONLY : mp_barrier, mp_reduce
        USE distribute_mod, ONLY : mp_collect
        USE strings_mod,    ONLY : uppercase
  #endif
  

  The mp_collect was restricted to CPP ROMS_STDOUT in a recent update.

Many thanks to Frans van Eeden ​reporting this issue.