Allow special value 0 for os_process_limit
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                 Key: COUCHDB-1282
                 URL: https://issues.apache.org/jira/browse/COUCHDB-1282
             Project: CouchDB
          Issue Type: Improvement
            Reporter: Randall Leeds
            Assignee: Randall Leeds
            Priority: Trivial


It's unlikely to be beneficial to run more os processes than there are logical 
processors in a system. It creates extra scheduling overhead if they are all in 
use. Currently default.ini specifies 25, though the code specifies 10 if the 
option is missing, and I expect both are too high for many real world 
deployments.

I propose the value 0 be used in default.ini and that it take special meaning: 
use the number of logical processors erlang detects.

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