replace malloc() by smalloc()
rename ScrubCommand::FileScrubbingTask to avoid confusion with upload::FileScrubbingTask
wrap PrintWarning() in mutex
properly init and destroy CommandScrub's Reader<>
add additional checks to swissknife scrub
loading repo server configs in test cases
TEST: integration test of swissknife scrub
add object modifier for micro catalogs
ignore txn directory contents entirely
adapt integration test 542
Merge pull request #350 from reneme/local_repo_scrubbing

Extension of the Local Repository Scrubbing Tool