Parallel gathering and downloading

[GoogleCodeExporter]

Wanna make gathering and downloading stages combinable.

Right now gathering and downloading stages are separate, and you can start 
downloading only after gathering is done.

Well, first things:
1) remake postprocessing stage, right now is something avarage between LIST 
(gathering) and PICS (downloading), I should make it separate as well, and 
execute it before download in "combined" job. Right now is impossible because 
POSTPROC is a part of LIST, and can't work simultaneously.
2) PICS shouldn't stop while LIST in progress. LIST should recheck PICS's 
threads state (resume it's work if all job is done) when adds new pics.
3) rework interface for combined job.

Original issue reported on code.google.com by catgirlfighter on 21 Oct 2013 at 2:22

[GoogleCodeExporter]

Well, something done.

Original comment by catgirlfighter on 7 Nov 2013 at 3:00

• Changed state: Completed

[GoogleCodeExporter]

Original comment by catgirlfighter on 8 Nov 2013 at 9:55

• Changed state: Fixed