This removes the POILogger and POILogFactory mechanism for logging. This mechanism was created at a time when the Java landscape looked very different than it does today.
Log4j 2 is an Apache Foundation project that is well maintained and is widely regarded as having good performance and capabilities. We use only the Log4j API artifact. This lets application developers choose how they want to capture logging events if at all. Integrations with Log4j 2 Core and Logback are available from the Log4j project.
Closes #224
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1886770 13f79535-47bb-0310-9956-ffa450edef68
Applying the copy2license.pl script (with tiny modification to allow for more whitespace than it expects in the POI header) to all files. ant jar succeeds, and the svn diff has been verified by eye. Still more files to do, this is the first pass.
Marius Volkhart
Andreas Beeker
Dominik Stadler
Nick Burch
Josh Micich
Henri Yandell
Glen Stampoultzis