Committed patch provided in Bug 40024. Avik, sorry bet you to it.
Committed a patch to Bug 13249. HSSF will now raise an exception if a name is provided that is case-insensitive match to an existing name. In addition the getNameIndex now performs a case-insensitive search. This now matches excel behaviour.
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@426082 13f79535-47bb-0310-9956-ffa450edef68