concrete spoolers now have a method name() that returns a debugging name for any concrete implementation of AbstractSpooler
FIX: race condition in ConcurrentWorkers: creating a ConcurrentWorkers facility and immediately after that destroying it resulted in a segmentation fault, when not all worker threads were at least scheduled once, before the master got deleted
removed const flags from members in SpoolerResult to be able to put them in a map :-P
added a method to FileProcessor::Results to conveniently get finalized FileChunks out of it
use FileProcessor::Results::GetFinalizedFileChunks() in the LocalSpooler
keep track of pending upload jobs (one compression/chunking job may spawn a number of upload jobs)
changed debug.cc ... will be removed at some time