interface files are addd. but useless
commiting current development status.
interface.tpl is removed.
interface.tpl is rollbacked.
interface.tpl is removed.
BasicController.java modified to fix compile error.
compat_types.py slightly modified.
compat_types.py modified to support struct interface def."
Openflow compatibility layer is implemented.
two useless files are removed.
stack generator now includes jackson support to add annotation IgnoreJson. and the custom serializer for OFPort is added and used State.java.