Optim: change error tolerance for golden section.
Optim: change error tolerance for golden section.

git-svn-id: a1095a31ddd1ec87300e5b7107de29aa3640f5e5@46 d008c882-1ab9-dbc1-6f75-8481792a1962

FireCARES/fire-risk,FireCARES/fire-risk,garnertb/fire-risk,garnertb/fire-risk