script: Add attempt logging for verifyPython()
script: Add attempt logging for verifyPython()

Log which Python commands were tried, and the results,
if no usable Python was found. Useful for debugging failures.

brettle/atom,PKRoma/atom,Mokolea/atom,atom/atom,atom/atom,brettle/atom,brettle/atom,Mokolea/atom,Mokolea/atom,atom/atom,PKRoma/atom,PKRoma/atom