detection for GCC_COLORS environment variable
Created by: stevenhoneyman
From gcc 4.9, it can do it's own coloring (but not as good!) Added detection for it, so that it doesn't try and add to gcc's colors
Created by: stevenhoneyman
From gcc 4.9, it can do it's own coloring (but not as good!) Added detection for it, so that it doesn't try and add to gcc's colors