Fix: Earthquakes could be 4 times as severe as intended, and were also a little too random in severity for a given machine. Please try out these new tweaked values.

Added an updated brazilian portuguese file I've had lying around. Ryan, please revert if it's wrong because I can't remember where I got it from.

git-svn-id: http://corsix-th.googlecode.com/svn/trunk@2074 c39591fa-788f-11de-a72b-d90af8dea425