SERVER-11045 Update man pages from the MongoDB Manual

This is a direct copy of generated man page content from
the MongoDB Manual.
SERVER-13261 bump versions in servers.js for branched v2.7

Second bump needed after release of v2.6 for latest-stable
SERVER-13258 ensure S2 poly loops have 3 points after dedup'ing
SERVER-13249 fix where we set timeout for slow builders

awaitSecondaries is already called by reInitiate()
Merge remote-tracking branch 'upstream/master'