Updated Spanish translation file.

git-svn-id: http://corsix-th.googlecode.com/svn/trunk@1995 c39591fa-788f-11de-a72b-d90af8dea425
Translation: Adding Brazilian Portuguese language. Thanks to Henrique Poyatos. Might need a bit of a cleanup before final 0.20 (commented out strings etc.)

git-svn-id: http://corsix-th.googlecode.com/svn/trunk@1996 c39591fa-788f-11de-a72b-d90af8dea425