another small report fix

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8912 5f5364db-9458-4db8-a492-e30667be6df6
Upgrade commons-codec to 1.9

git-svn-id: svn://svn.code.sf.net/p/htmlunit/code/trunk@8913 5f5364db-9458-4db8-a492-e30667be6df6