Updated the "functions" multi-threading example to catch any errors thrown by the individual root finding methods, turning them into failures (required by the new "humps" function that breaks the Newton method).
Updated the "functions" multi-threading example to catch any errors thrown by the individual root finding methods, turning them into failures (required by the new "humps" function that breaks the Newton method).

git-svn-id: 4c7b768bc2e2a56aa1c56b1b5a9454ba68342430@4070 ac9c905b-388a-4ddf-9b6a-4063a022bc57

LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2,LogtalkDotOrg/logtalk2