[Boost-build] Color console output

Subject: [Boost-build] Color console output
From: Chambers, Matthew (matt.chambers42_at_[hidden])
Date: 2016-10-17 14:02:54

Is there any interest in having BB emit its warning and error messages in color? It's just a matter of writing ANSI color codes on modern 
*nix shells, but even in Windows cmd.exe it's possible. I think it would be very helpful for quickly discriminating between mundane build 
text, error/warning messages, and in the case of failed actions, the body of the action that failed.

For Windows, it requires a few system calls:
http://stackoverflow.com/questions/7778392/colorize-stdout-output-to-windows-cmd-exe-from-console-c-app

Should output.c/h be split out by nt/unix like path and exec are?

-Matt