Workaroudn to get rid of warnings in generated thrift code.
Modify gen-thrift ant target to add a SupressWarnings("all") to all
generated java file (we do a regex replace.)

Also retab'ed build.xml file

Now with all relevant files added!

[#26756797]

Upgrade easyMock to 3.1: Now supports creating mocks from classes (and
not just interfaces)

This turned out to be a significant change since we need to make sure
all connected switches have consistent state at all times (e.g., no
reordering of role request message, no race conditions on switch
connect, ...)

Added more unit tests. More unit tests still to come.

[#26756797]