e.g. if one merely has "SetConfigVar DEBUG : HAIKU_TOP src system kernel ;"
this won't actually set a value for DEBUG, and thus it won't use one
of the pre-set debug objects directories, and so all the objects will
wind up in the root of wherever jam is run.
* 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
