mmm-util-core: exception cleanup

[hohwille]

We got feedback that our net.sf.mmm.util.nls.api package is somewhat overloaded and already thought about a general exception cleanup. To keep compatibility we want to do the following:

• Refactor/Move all exceptions classes from net.sf.mmm.util.nls.api to net.sf.mmm.util.exception.api.
• Restore all old classes, derive them from the new ones where possible and mark them as deprecated (in the next major release, we will remove them).
• In the new package we will skip methods with NlsTemplateResource as argument. In the old deprecated classes we will keep them for compatibility. Also we will deprecate them in NlsMessage.

[hohwille]

With this cleanup we can also fix some names of exceptions that got a not-so-good name in the new package.

[hohwille]

completed. No renaming performed - names are all fine.