Fixed Cterm_amidation hydrogen naming
Many residues have hydrogens named e.g. 1HE2/2HE2, which rendered the atom names in Cterm_amidation problematic sometimes. C-terminal glutamine with this patch applied would see protons flying all over the place, potentially affecting pose scoring, for reasons incomprehensible.
Additional advantage: the new names, 1HN and 2HN, are the Correct Names according to PDB style and don't conflict with anything but mutually incompatible patches like Cterm methylamidation.