Using new build

[Jonathan Gibbons]

A couple of questions about new build.

Sometimes a build fails because of dev changes. One of the useful 
features about the existing build is the ability to cut n paste a 
command, and to modify/execute that command outside the build to debug 
the dev changes. Is it easy to get a log of the commands being executed?

Right now, the existing build is sequential and relies on starting from 
the beginning.  This might mean that you have to build A and B to get to 
C, even though C does not depend on A and B.   Are the dependencies in 
the new build accurate enough, and the interim targets public enough 
that I could take a clean forest, go "make C" and have it build the 
minimum set of dependencies necessary to get to C?   This would 
certainly help developers debug problematic code.

-- Jon