Must be enabled at compile time. It bends around the respective
naive implementations in OST to their parasail counterpart.
On one hand its faster and on the other hand it should fix potential
suboptimal alignments which are reported in SCHWED-6266

This commit additional drops more side-effects of the presence of a
seqres record by moving all the logic to the GetSeqRes function, rather
than being generated on the fly during parsing.

This replaces the awkward FindCompound(... by=) which would return
a single arbitrary compound.

This allows preferentially picking a non-obsolete compound
in FindCompound by="smiles/inchi"