* Added additional parameters to DeferredSubInclude. It's now possible
to specify an alternative Jamfile name.
* Added DeferredSubInclude example to UserBuildConfig.ReadMe showing the
new feature.
* Moved ExecuteDeferredSubIncludes in the root Jamfile before the
inclusion of HaikuImage, NetBootArchive etc., so that targets defined
in the subdirectories are already known there.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24680 a95241bf-73f2-0310-859d-f6bbb57e9c96