regression.py invoked as follows.
python regression.py --runner="Sandia-darwin-ppc" --bjam-toolset=darwin \
--pjl-toolset=darwin --toolsets="darwin-3.3,darwin-4.0" --bjam-options="-j2 --without-serialization"
using darwin
: 3.3
: /usr/bin/g++-3.3
;
using darwin
: 4.0
: /usr/bin/g++
;