When using 'pkcon install' assume arch filter unless specified otherwise
hawkey: Get and set the correct keys in the yumdb
hawkey: Run GetDetails() in a thread to avoid blocking the daemon
aptcc: Change some changelog formatting which can confuse markdown parsers

Some clients don't handle two whitespaces before a bullet point and
produce crappy output.
In order to get sane GPK changelogs, GPK needs a patch as well (to know
parse the second kind of bullet point right)
Katja: fix wrong of patch metadata

Slackware patch metadata could rewrite the metadata of a package
with the same name from another repository.
Katja: Exclude duplicates from search results
Katja: remove obsolete packages on update-packages