Improve Log utility class
Improve Log utility class

String message arguments have been loosened to Object, and initial class
Javadoc has been filled in.

This used to be revision r4875.

TehSAUCE/imagej,TehSAUCE/imagej,TehSAUCE/imagej,biovoxxel/imagej,biovoxxel/imagej,biovoxxel/imagej