Overloading the velocimacro field to allow multiple macro files preloaded

Since XWiki 1.5 it is not possible anymore to configure the list of macro files to be loaded. This used to be possible in velocity.properties.

Here is a patch proposal which uses an xwiki.cfg xwiki.render.velocity.macrolist parameter

===================================================================
— src/main/java/com/xpn/xwiki/render/DefaultVelocityManager.java (revision 12117)
+++ src/main/java/com/xpn/xwiki/render/DefaultVelocityManager.java (revision 12126)
@@ -184,7 +184,10 @@
} else {
// Gather the global Velocity macros that we want to have. These are skin dependent.
Properties properties = new Properties();

• String macroList = "/templates/macros.vm" + (cacheKey.equals("default") ? "" : "," + cacheKey);
  + String macroList = xcontext.getWiki().Param("xwiki.render.velocity.macrolist", "");
  + if (macroList.equals("")) { + macroList = "/templates/macros.vm" + (cacheKey.equals("default") ? "" : "," + cacheKey); + }

  properties.put(RuntimeConstants.VM_LIBRARY, macroList);
  velocityEngine = velocityFactory.createVelocityEngine(cacheKey, properties);
  }