* Use static initialiser block to initialise factories rather than variable initialiser.
* Add static member thisClassLoader to cache classloader for the LogFactory class;
change all calls to LogFactory.class.getClassLoader() to just use thisClassLoader.
* Change getContextClassLoader to always use AccessController (actually, rename
getContextClassLoader to directGetContextClassLoader, and make getContextClassLoader
a wrapper around that).
* define a method getClassLoader(clazz) that just does clazz.getClassLoader for now;
change all calls to clazz.getClassLoader into getClassLoader(clazz)
git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/logging/trunk@170501 13f79535-47bb-0310-9956-ffa450edef68
e985f2a051