added parentheses around project-paths when passing it to commands
like reprepro
elbexml: add method to set the target pkg list
projectmanager: modify target pkg-list in xml, when modifying aptcache
projectmanager: when marking pkg for delete, obey auto depends
updated: write currently installed version into /etc/updated_version
projectmanager: add method to get debootstrap packages
asyncworker: log complete build traceback

We probably want this for all workertypes
elbeproject rfs: fix double invocation of dump_debootstrappkgs

dump_debootstrappkgs() is called a second time, when the buildimage
packages are installed.

This patch just prevents the second call, with a flag.
But this codepath needs to be restructured.
filesystem: initialise images to empty list instead of None

set( None ) yields an Exception, prevent that.
db: protect against ep.targetfs.images == None
gitigonore: add some more elbe packages