The remanining part of this API is to make it possible to use resources and sources in 
Use Dependencies. Moving to milestone 3, reassigning to Chris.

Must-have features for milestone3, have impact on APIs (at least potential).

A full description of the support proposed for use dependencies can be
viewed at
http://projects.netbeans.org/proposals/buildusedependencies/BuildUseProposal.html.
Since use dependencies express inputs to a build target and inputs can
be used in multiple build target specific ways, the projects
infrastructure will provide a support class providing an algorithm to
detect changes since the last invocation. This should provide help in
providing useful compilation upToDate implementations.

added API keyword

Adding a dependency on 23284 as the input list should be stored in a
private setting.

This change completes the timestamp check as well as the use
dependency api.

done, closing