Trac Ticket #338 - letters in object's cn get converted to
lowercase when renaming object
Fix description: In modrdn, if newrdn is different from the oldrdn
only by upper/lower cases, it was ignored in the entryrdn code.
This patch recognizes the change and updates the entryrdn index.
commit b1ed11117e02c0ae670f05f9850b20fd9334d567