[PATCH] Adjust HP for Celtic and Spartan female citizens

[Palaxin]

In r16757 HP for female citizens were halfed. Since Celtic and Spartan females have hardcoded HP in their templates, they have become quite overpowered compared to "normal" females.

A simple fix is to adjust the HP in the civ templates. Interestingly the float HP of some Celtic females are not rounded from 37.5 to 38, so at full HP 38/37.5 is displayed.

The other solution is to add two autoresearch technologies which multiply the standard female HP by the desired factor. So you have only to adjust the HP once and they are scaled automatically for Celts and Spartans. Interestingly the display problem did not occur here.