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

[Lou Hafer]

Ted, Stefan, et al.,

	While working on other code, I was browsing in CoinFinite.hpp and that 
reminded me of the goal of removing config_xxx.h from the set of 
installed include files. This will get very ugly. CoinFinite.hpp makes 
explicit use of many symbols defined in config_coinutils.h, and 
CoinFinite is heavily used, directly and by other include files. This is 
definitely not something we're going to do in a day.

						Lou