Avoid unnecessary copy of fragment smiles
Avoid unnecessary copy of fragment smiles

This makes things a little less clear (which is why I left it out originally) but it's more efficient. Now, rather than updating vfragsmi with the sorted fragment smiles, the final result smiles is generated directly.
soerendip42/rdkit,rdkit/rdkit,bp-kelley/rdkit,bp-kelley/rdkit,soerendip42/rdkit,rvianello/rdkit,bp-kelley/rdkit,ptosco/rdkit,rvianello/rdkit,strets123/rdkit,rvianello/rdkit,adalke/rdkit,greglandrum/rdkit,ptosco/rdkit,rdkit/rdkit,soerendip42/rdkit,greglandrum/rdkit,rdkit/rdkit,soerendip42/rdkit,rdkit/rdkit,strets123/rdkit,adalke/rdkit,bp-kelley/rdkit,adalke/rdkit,adalke/rdkit,soerendip42/rdkit,strets123/rdkit,rdkit/rdkit,adalke/rdkit,strets123/rdkit,rvianello/rdkit,jandom/rdkit,ptosco/rdkit,strets123/rdkit,strets123/rdkit,soerendip42/rdkit,strets123/rdkit,rvianello/rdkit,adalke/rdkit,rvianello/rdkit,rvianello/rdkit,adalke/rdkit,bp-kelley/rdkit,adalke/rdkit,bp-kelley/rdkit,ptosco/rdkit,greglandrum/rdkit,jandom/rdkit,ptosco/rdkit,jandom/rdkit,soerendip42/rdkit,bp-kelley/rdkit,ptosco/rdkit,greglandrum/rdkit,jandom/rdkit,rdkit/rdkit,greglandrum/rdkit,greglandrum/rdkit,greglandrum/rdkit,ptosco/rdkit,rdkit/rdkit,jandom/rdkit,rvianello/rdkit,ptosco/rdkit,jandom/rdkit,greglandrum/rdkit,rdkit/rdkit,bp-kelley/rdkit,strets123/rdkit,jandom/rdkit,soerendip42/rdkit,jandom/rdkit