Add colored output to console

[rmboggs]

Setup the output of the build results to be displayed in color depending on the outcome of the build script tasks. For example, green output for successful runs, yellow output for warnings, and red output for errors.

[wernight]

<fail> and error messages in red are the most important. Using ANSI color it should be very simple: Simply print "\033[31m" + message + "\033[0m" (where \033 is the character octal 033).

There are existing extensions like colornant, NAntColours, or http://twericliu.blogspot.co.uk/2008/03/colorized-nant-console-output.html . Most can't keep up to date with the source code, or simply don't work anymore without heavy work.

Once supported, simply having ANSI Color plugin in Jenkins allows to see NAnt error in Jenkins in a blink too.