fix issue TACHYON-73 in JIRA: change toFullPermission in UnderFileSystem.java to handle all posix permissions
fix indentation, change changePermission to setPermission
remove toFullPermission
Merge pull request #202 from uronce-cc/cc

fix issue TACHYON-73 in JIRA: change toFullPermission in UnderFileSystem...
minor bug fix, tweaks.