Created attachment 2789 [details]
a proposed soultion for 2.

The documentation suggests to use the following command to get all GPL sources:

$ cd poky/build/tmp/deploy/sources
$ mkdir ~/gpl_source_release
$ for dir in */*GPL*; do cp -r $dir ~/gpl_source_release; done

For this to work the archiver would have to create a subfolder per license under deploy/sources/.

However in reallity the sources are in a folder named afer the package name and the version directly under deploy/sources/

So eigher:
1. the documentation should be changed
2. or the archiver.bbclass should be adjusted (preferred).