Compile mochijson2 with +native.
Compile mochijson2 with +native.

Improves latency and req/s for many concurrent writers and large docs.

Does not affect other scenarios negatively.

Slight overall performance increase.

Closes COUCHDB-798.

git-svn-id: c1f8a8ec0b3bb2e99ab3413722f81f687760e79c@1039494 13f79535-47bb-0310-9956-ffa450edef68

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb