SERVER-16300 fix MMAPv1 repair cursor invalidation of a document in a singleton collection
SERVER-15424 Eliminate unused ConnectionPool::Options structure in NetworkInterfaceImpl.
SERVER-15424 Fix signed-unsigned integer comparison
SERVER-16478 Remove unused List1 class
SERVER-15043 Don't log about rollbacks at default log level
SERVER-16086 Should not open the Unix Domain Socket if the chmod fails

Closes #871

Signed-off-by: Benety Goh <benety@mongodb.com>
Merge remote-tracking branch 'upstream/master'