name output files after config and write output log

[Findus23]

This is something that annoyed me for a long time, so I finally fixed it:

When running monofonic on two config files:

monofonIC config-test-a.conf
monofonIC config-test-b.conf

both of them will write their data into e.g. input_powerspec.txt and therefore overwrite the values of the first run making it hard to remember which config file which output belongs to and compare them.

Even worse when running

monofonIC test-a/config.conf
monofonIC test-b/config.conf

in both cases the input_powerspec.txt ends up in the current directory instead of the one where the config is.

So I changed it that the config object also stores it's location and basename and therefore we can then name the output files e.g. config-test-a_input_powerspec.txt.

And in addition I added the output log at config-test-a_log.txt like in music.