Updated quinquereme tip image and text.
Minor updates to some maps.
Seleucids now use some Ptolemies ship actors temporarily.
This was SVN commit r14917.
Added some detail to Nile River.
Updated Syria a little bit.
Added Pureons new tech portraits to some techs.
Portrait for Ptol champ elephant.
Gave the Military Settlement system to the Ptolemies. We'll use their
merc camp for a developing merc camp system. Ptol heroes can found civic
centers just like the Sele heroes.
This was SVN commit r14860.
