post 2.6.0-rc2

Conflicts:
	src/mongo/util/version.cpp
SERVER-13435 do not run dropdb_race.js in smalloplog

(cherry picked from commit cffd39b33fd0c6e311237cacc7360da3ea776a21)

Conflicts:
	buildscripts/smoke.py
BUMP 2.6.0-rc3

Conflicts:
	rpm/mongo.mdv.spec
	rpm/mongodb-enterprise-unstable.spec
	rpm/mongodb-enterprise.spec
	rpm/mongodb-org-unstable.spec
	rpm/mongodb-org.spec
	src/mongo/util/version.cpp