HUDSON-5360 (add a new classloader ("a la" child first for plugin))
I have updated the patch.
If no problem, I will commit this (as it doesn't break nothing : just
a new possible plugin classloader. This option is available with the
last hpi plugin release 1.54).
With this patch I have started maven 3 support (using new maven
execution listener etc..).
Some jobs has been pushed here.
NOTE : it's really a work  in progress.
I need to work more on remote execution with more classloading issues :-)
Currently to get the new classLoader in the plugin I use something
like : ClassLoader pluginClassLoader =
Hudson.getInstance().getPluginManager().getPlugin( name ).classLoader;