Set receive socket buffer size to 256K bytes, to avoid ENOBUFS error
on netlink socket.
gdb macro to dump ksync wait tree entries and pending buffer size in transit.
Merge pull request #213 from Juniper/psethi_controller

Set receive socket buffer size to 256K bytes, to avoid ENOBUFS error
In simple-gateway, support configuring routes from config file.
If no routes are configured, agent will add default route
Merge pull request #218 from praveenkv/master

In simple-gateway, support configuring routes from config file.