ENH: What to see during buildaix versus - what is saved to a logfile.

Currently each phase (configure, make, 'make install' and mkinstallp.ksh) has it's own output logged to .buildaix/somelog.out and the stderr of any command goes to screen (and is lost).

Want to:
a) capture the stderr output - whether single or multiple logs is not an issue atm
b) have an option to ALSO display the stdout (real-time or summary)