The GM Awards tab under Feats & Abilities provides a very easy way to add odd bonuses.
Please add "+1 bonus language" to the GM Awards, with a free choice as if from Linguistics.
(I'm trying to stat up some NPCs from the current Adventure Path, and some have unusual patterns of languages known.
E.g. a "Serpentfolk" Ghast necromancer knowing Aklo, Azlanti, Common, Necril, Orvian, Undercommon - but with no ranks in Linguistics.)
I could fake it by adding bonus Skill Points in Linguistics, but then the character knows Linguistics!!
("Serpentfolk" only in the sense of cosmetic appearance and +3 lvls of Undead)
pathfinder core sumpplements ruleset