Added BSN mirror config flag to input files
Fixes to the OF 1.0 match support

- fixed bug with matching on VLAN
- added support for matching on ARP fields
Fixed a src vs. dst bug
Fix warnings in OFBufferID
Handle null-termination of string in readFixedLengthString
Generic message reader

- uses appropriate factory based on version from the message being parsed
Added functionality from old floodlight MACAddress class

- added isBroadcast and isMulticast methods
- improved error-checking when constructing from a string
- added more unit tests
More fixes for supporting ARP match fields with OF 1.0
Merge into master from pull request #87:
Improvements and bug fixes to OF 1.0 match support + BSN mirror dest config flag (https://github.com/floodlight/loxigen/pull/87)