refs #610 This change does not affect TokuMX, reverting.

Revert "SERVER-4781 If in initial replication, allow a non-strict mod applying policy."

This reverts commit b19f46ea4b744f9281fb33e7f1491b8080aa879d.

Conflicts:
	src/mongo/db/oplog.cpp
	src/mongo/db/ops/update.cpp
	src/mongo/db/ops/update.h
	src/mongo/db/ops/update_internal.cpp
	src/mongo/db/ops/update_internal.h
	src/mongo/dbtests/repltests.cpp