debug target for code rtofs_code.df/rtofs_ncodaz_inc2mom6nc_glb_lyr.fd

[DanIredell-NOAA]

Requirements for new code rtofs_code.df/rtofs_ncodaz_inc2mom6nc_glb_lyr.fd:

Compile with debug flags. When they are compiled with these flags it should not fail and there should be no compile warnings.

[DanIredell-NOAA]

These are the warnings (only unique ones listed here)

warning #8889: Explicit declaration of the EXTERNAL attribute is required. [BLKINI]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [BLKINI2]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [BLKINI9]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [BLKINR]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [BLKINR9]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [FDATE]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [GETENV]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [NCHEK]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [RD_DIMEN]
warning #8889: Explicit declaration of the EXTERNAL attribute is required. [ZHFLSH]