Used in SIGCOMM submission

Conflicts:
	tcl/ex/cong-config/equisource.tcl
Congestion control module (MIT / Remy & Onramp projects)
Merge Hari's changes from remy branch
Fixes to how stats are computed. Tested.

Conflicts:
	tcl/ex/cong-config/diffdelays.tcl
	tcl/ex/cong-config/equisource.tcl
	tcl/ex/cong-config/rate-estimate.py
	tcl/ex/cong-config/vz4gdown.tcl
	tcl/ex/newremy.tcl