SERVER-15593 Initial autosplit heuristics are very aggressive when config servers are down
SERVER-15262 Map/reduce incremental collection code should be called without lock
Revert "SERVER-14674 Shard dies during chunk migration if running repairDatabase and Compact"

This reverts commit 0fde30ad2f873e7f835aa224e83a97ae6d4a171e.

Conflicts:
	src/mongo/s/d_migrate.cpp
Merge remote-tracking branch 'upstream/master'