SERVER-14021 move all replication code into namespace replset
SERVER-14001 remove reIndex branch from rollback code since we do not oplog reIndex
SERVER-13645 kill dead code
SERVER-13675 do not cache plans if there is a tie
SERVER-13912 Capped collections with size=0 are promoted to the minimum Extent size
SERVER-13910: Warn the user when running a 32-bit build on Win64

Windows 32 bit builds have less virtual memory available
then 64-bit builds, warn the user they should use a 64-bit build
over a 32-bit build.
SERVER-10044: Add more diagnostic information on OOM
Merge remote-tracking branch 'upstream/master'