Function delta_merge_loc 

pub fn delta_merge_loc(
    sources: &[(&str, &Loc)],
    baseline: Option<&Loc>,
    resolutions: &[MergeResolution],
) -> Result<(Loc, Vec<MergeConflict>)>

Delta-merges multiple Loc tables into one. See delta_merge_db for the general behavior; Loc tables always key on their single key column.