when its output is piped and then teed to a file. there
would be hidden ansi escape codes that would break
normal grepping in weird ways unless you octaldumped
the teed file and remembered to filter the escape sequences.
the tweak is to not enable AUTORESET in ANSIColor until
detect_color_support() in cbench.pl decides to enable it.
associated with that is NOT setting AUTORESET after the
"use ANSIColor" in cbench_output_parse.pl