Add missing ':' to 'RefSeq_dna:equus_caballus' in species section.

  Remove (comment out) non-existant source 'ncRNA::equus_caballus' from
  species section.


For pongo_pygmaeus:

  Replace non-existant source 'UniGene::pongo_pygmaeus' with
  'UniGene::MULTI' in species section.