Merge branch 'test'
More friendlier error messages.
Merge branch 'master' into FindBugs
Fixed FindBugs warnings.
Added more checks to CommonLogger and fixed LogPriority.
Merge branch 'FindBugs'
Added LogFactory.
Removed LoggingContext.
Fixed NPE.
Fixed (most) failing tests.
Added TTCC-like formatter.
Fixed some small bugs.
Added more priorities and OutputStreamRedirector.

OutputStreamRedirector redirects output to an outputstream to a
LogChannel.
Added IncrementingFileChannel.
Added a test for the new channel.
Moved MessageBoxChannel.
Fixed bug in HumanLogFormatter.

Also duplicated some code of TTCC.
Removed many lines in WriterDecorator.

HumanLogFormatter has been rewritten.
Added @since annotations to .logging.bridge.
Added @since tags for .logging.channels.