SERVER-8864 Use BIO pairs for socket decoupled SSL network interface
SERVER-8864 Fixed failing unit test 'sock_test'
SERVER-8864 Fixed recv exception handling in httpClientTest and web server
SERVER-10513 log warning about deprecation of votes in replica set config
SERVER-10460 ensure IndexRebuilder runs at startup on secondaries
SERVER-10460 fix slowNightly/index_retry.js failure
SERVER-6376 no longer trigger elections or reconnections for replica set reconfigs consisting only of tag changes
SERVER-9516 Logic of system.users schema upgrade process.

Includes AuthorizationManagerExternalState interface changes and implementation
in the mock, plus unit tests.
SERVER-9516 Initialize local variable to satisfy a compiler.

Newer compilers correctly identify that durableVersion in this patch is always
initialized before use, but some older compilers cannot perform a sufficient
analysis, and issue a spurious warning.
SERVER-9516 Fix authorization_manager_test reference management problem.
SERVER-10657 wait longer for replication in replsets_prefetch_stress.js

Because the nodes can still be very busy doing replication while we're
trying to poll the replication status, it can time out before we've even
done one assert.soon loop.
SERVER-6376 small refactor to eliminate redundant code
SERVER-10654 background index builds on slaves are no longer synchronous
SERVER-10678 Log a warning but do not throw when unable to determine local address of a socket.
SERVER-10231 disallow creation of indexes on system.indexes
SERVER-6405: removed dead code
SERVER-6405: move rename into database
Removed old unused Model class
SERVER-10660: don't print upgrade pdfile version message when not needed
SERVER-9818 allocate socket file descriptors before opening datafiles