Added the ability to set custom methods instead of the auto-generated methods, and added custom methods for getActions/setActions in OFFlowMod implementation classes of version 1.3.
Changed getActions() to just take the action list from ApplyActions if found instead of creating a new list, as ApplyActions may only appear once.
Merge into master from pull request #54:
Custom methods and getActions/setActions custom impl in 1.3 (https://github.com/floodlight/loxigen/pull/54)