WIGOS related updates, new gage processing, and some bug fixes

Added support for global (and WIGOS compliant) sfcsno files in USAFSI
Added support for global (and WIGOS compliant) preobs files in NAFPA
Added new gage processing library in NAFPA
Added support for global (and WIGOS compliant) sfcobs files in LIS AGRMET
Modified numerous write statements to add [INFO], [WARN], or [ERR] tag
Modified several write statements to trim character variables before output
Initialized certain arrays to zero immediately after allocation
Corrected variable type of QC flags (were real, now are integer)
Changed some if statements to avoid "equals" checks of real variables (considered bad practice)
Added some checks and error handling of status codes from MPI calls
Fixed preprocessing bug in RAPID_routing_run.F90 (call to RAPID_model_main must be wrapped by #ifdef PETSc)

NASA-LIS / LISF