Registering individual store quota stats instead of aggregate to the Mbean server
Merge pull request #198 from icefury71/mbean_quota_fix

Registering individual store quota stats instead of aggregate to the Mbe...
Releasing Voldemort 1.8.7 with the Quota metrics fix
add socket connection refresh message in AdminClient
Wrap mime multipart into a mime message to ensure headers are updated
Update CONTRIBUTORS

Add Arun and Xu