added method to normalize a path to remove possibility of leaving a root directory
added method to normalize a path to remove possibility of leaving
a root directory


git-svn-id: 7267684f36935cb3df12efc1f4c0216d758271d4@73929 13f79535-47bb-0310-9956-ffa450edef68

pcollaog/velocity-engine,diydyq/velocity-engine,diydyq/velocity-engine,pcollaog/velocity-engine