[DOXIASITETOOLS-168] Add ability to explicitly load custom Velocity tools Instruct Velocity to load possible custom tools from /META-INF/maven/site-tools.xml found in the classpath of the Maven Site Plugin.
maven/doxia/doxia-sitetools/trunk/doxia-site-renderer/src/main/java/org/apache/maven/doxia/siterenderer/DefaultSiteRenderer.java