TS-2977: move traffic_manager

Move traffic_manager to the cmd subdirectory. The local manager
implementation is tightly coupled to traffic_manager, so break that
as much as we can by passing globals down.
TS-2977: apply library naming conventions to librecords

Everywhere else "foo_lm.a" is the local manager variant, and "foo_p.a"
is the process manager variant. Make librecords follow the same
pattern.
TS-2977: move the stats processor to traffic_manager
TS-2977: incorporate libutils into libmgmt

Simplify the link topology by incorporating libutils into libmgmt.
Management clients don't need to know the gory details.
TS-2977: minimize web2 and cluster in the headers search path
TS-2977: rename traffic_manager Main.cc

Rename traffic_manager's Main.cc to traffic_manager.cc. Remove
Main.h, retaining just the 2 or 3 things from it that are used.
TS-2977: CHANGES