pylinting
New submodule metadata
Plenty of new feaures

* support for FsEvents/kqueue (osx)
* modularization (no more unique blob script)
* lot of fixes and speed improvements
fixes on file deletion and reading
slightly database update
AcoustidMetadataThread and fixes

* Scan using chromaprint (http://acoustid.org/chromaprint) to retrieve
acoustid informations. yay!

* since the number of thredas increases, we now pass a list containing
multiple queues.

* "fixes" on osx.py: added a lock trying to prevent a serious race
condition on new files access. It surely dosen't work.
Merge branch 'master' of github.com:radiocicletta/Scriptcicletti