Update glycam code set to include letter when open valences are 3 and 5.
Update glycam code set to include letter when open valences are 3 and 5.

rtdavis22/GMML,tectronics/gmml,tectronics/gmml,tectronics/gmml,rtdavis22/GMML,tectronics/gmml,rtdavis22/GMML