dep11: Correctly detect suite components
dep11: Use apt_inst exclusively and help dak to close open files

Avoids a crash when processing multiple files
trivial: Update log output

Be less verbose if there is no error, and be a bit more verbose when
writing icons.
Long-term, this logging stuff needs a bigger review ;-)
dep11: Fix filewriter and improve suite-processing
Merge branch 'ximion-master'