* make ARCHS argument for cmdsettings.sh to be used by the tools so we could build on sparcs etc
* add ipython-notebook/qtconsole (and probably ipython1x over ipython01x for >= wheezy) to welcomewizard

  would need to assure that mvpa2-tutorial is aware of ipython1x first
  then... not now
* make all nd_* scripts usable out of the box on non-x86 boxes