bug 422541: [Commons] Base64Utility shouldn't use String.indexOf() (Performance)

https://bugs.eclipse.org/bugs/show_bug.cgi?id=422541

Changed usage of String.indexOf() to usage of two static Arrays. So it is possible to get char / byte with direct array access.
Bug 422935 - PlannerField: Not possible to set splitter position afterwards

https://bugs.eclipse.org/bugs/show_bug.cgi?id=422935

Patch contributed by Thomas Schweigler <thomas.schweigler@bsiag.com>
Bug 422935 - PlannerField: Not possible to set splitter position afterwards

https://bugs.eclipse.org/bugs/show_bug.cgi?id=422935

Added Release Notes