openflow_input: add bsn_debug_counter extension
loci: support bsn_debug_counter extension
update copyright year
debug_counter: replace of_table_name_t with of_str64_t
bsn_debug_counter: remove reset message
loci: fix compilation with GCC <= 4.4

The __builtin_unreachable macro was introduced in GCC 4.5.
Merge into master from pull request #235:
loci: fix compilation with GCC <= 4.4 (https://github.com/floodlight/loxigen/pull/235)
Merge into master from pull request #234:
OFVlanVidMatch: enable correct conversion of VlanVid.NO_MASK (https://github.com/floodlight/loxigen/pull/234)
Merge into master from pull request #228:
bsn_debug_counter extension (https://github.com/floodlight/loxigen/pull/228)
java_gen/pom.xml: adapt to extended floodlight-buildinfo format

introduced in bigswitch/floodlight@4d8e3e38d31