* will be mostly IO bound so make sure thread count doesn't easily get higher than 8-12 threads

git-svn-id: svn://svn.code.sf.net/p/filebot/code/trunk@2670 40b5aca5-6b98-4155-8834-ff3a5bb60073
* keep a common shared thread pool for local search

git-svn-id: svn://svn.code.sf.net/p/filebot/code/trunk@2671 40b5aca5-6b98-4155-8834-ff3a5bb60073
* increase parallelism for OSX (10.8+) machines

git-svn-id: svn://svn.code.sf.net/p/filebot/code/trunk@2672 40b5aca5-6b98-4155-8834-ff3a5bb60073