AllocLinkType has different descriptions for enum in FIX42.xml and FIX44.xml

Despite them having the same name in the FIX spec document "F/X Netting" and "F/X Swap" the enum values for AllocLinkType are different in FIX42.xml and FIX43.xml / FIX44.xml.

In FIX42.xml they are FX_NETTING and FX_SWAP, in FIX44.xml they are F_X_NETTING and F_X_SWAP. I prefer the FIX42 value, but if this was changed it would break existing code, as the FIX44 value is used to generate the Field class, so for backwards compatibility reasons, the best thing to do is probably change FIX42.xml.