bug fixes for obs_seq_to_netcdf and grabbufr.x

Bug fixes:

• Added logic to obs_seq_to_netcdf to keep track of whether a files has been created for an epoch during that run of obs_seq_to_netcdf. Previously if there were multiple obs_sequence files in an epoch, the epoch file was being created afresh for each obs_seq file. Thus, only obs from the last file in the list were present in obs_epoch.nc
• The PGI compiler requires a declaration for the STAT function. This prevents STAT exiting with an error when using long filenames.

bug fix for wrf unique level count.

Uninitialized array for unique levels in the wrf model_mod.f90 could lead to forward operator failures depending on the number of processors used.

bug fix for cam-fv model_interpolate

Fixed bug in cam-fv model_interpolate where the incorrect array slice of quad_vals was being passed to quad_lon_lat_evaluate.

bug fix for cam-fv model_interpolate

Fixed bug in cam-fv model_interpolate where the incorrect array slice of quad_vals was being passed to quad_lon_lat_evaluate.

latest version of local particle filter

Latest version of local particle filter from Jon Potterjoy
New mpi_utilities routine get_global_max

mkmf.template fixes

Fix for the PGI compiler to treat a backslash as a normal character, and not as an escape character in quoted strings.
Removed out of date options for the Intel compiler.
Added options_mod.f90 to path_names that were missing it (test_quad_*_interp).
Corrected typo in input.nml for obs_total_error that was causing fail in preprocess.

New obs converter for Solar Induced Fluorescence

This converter is for the 'harmonized' SIF data in netCDF format.
The full documentation for the converter can be found in the observations/obs_converters/SIF directory.

POP documentation typo fix

This fixes a couple minor typos in the DART documentation for POP. The meaning is unchanged.

Improved support for generating synthetic observations

Improved MATLAB scripts and new scripts for cam-fv make it simpler to generate synthetic observations evenly spaced around the sphere.

The Fortran program create_sphere_obs now accepts namelist options for observation levels and time. The errors used for radiosonde observations in create_sphere_obs are now taken from the NCEP (or ECMWF ) error module.

Bug fix: The Fortran program create_sphere_obs now correctly uses Pascals for pressure values.

Support for identity observations added to obs_info

The obs_info program can be used to summarize obs sequence files containing identity observations as well as real observations.
There is an option to output the summary information from obs_info (observation types, times, and counts)as a .csv file.