[BuildTools] Removing config_xxx.h (specifically, config_coinutils.h)

[Lou Hafer]

Stefan,

> in general, I think one needs to find a mechanism to split up
> config_xxx.h into a header file that includes a minimal set of defines
> and gets installed and one that has all the remaining defines and is
> only needed to build that project.

	I think this hits it on the head. There's a lot of stuff in 
config_coinutils.h that is useful to the average everyday user trying to 
write portable code that plays nicely with COIN code. If memory serves, 
the root of the original complaint was multiple definitions of the 
PACKAGE_* macros produced by autoconf. If we simply separate out the 
replicated macros, would that be an acceptable fix?

						Lou