Currently the output of every recipe step (fetch, extract, compile,...) is outputted on stdout.

While this is useful for debugging/verifying all steps are being executed properly, they have the following downsides:
* too much information (you don't really know where exactly you are in the full process)
* if you want to log that information you need to log the full output
* you might want to only view such details later or only if something failed

The following patch solves this by logging each recipe step to log files.