tinderbox information.

[Egbert Eich]

I'm still trying to understand the build that takes place in
tinderbox. It looks like it checks out pieces of the tree
and does a 'make -k'. 
This has two disadvantages:
1. It doesn't stop on the problem, therefore the area
   where the problem happened is not easy to spot.
2. The Makefiles don't get rebuild. If something was
   changed within an Imakefile or config file it will
   not show up in the logs.

Egbert.