LANG-1020: Improve performance of normalize space. Thanks to Libor Ondrusek. This closes #27 from github.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1620317 13f79535-47bb-0310-9956-ffa450edef68
Fix typo

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1620321 13f79535-47bb-0310-9956-ffa450edef68