This represents the first pass of the parsing script. Tests show
that it is working as intended. Next iterations will trim down the
number of arguements as needed.

This commit reduced some of the redundant calls and settings that
were default in the global_control.nml.IN.  Changes were conservative
to avoid future conflicts with variables that need to have dynamic values.
Comments were also removed that were present in the previous commit.

Added a new function to compile the namelist after all environmental
variables have been defined. Allows for different coupling cases to
aggregate a finished namelist via atparse.