of_tunnel_id support for OXM is added.
toString methods are overrided for ICMPv4Code and ICMPv4Type
javadoc updated.
tunnel_id oxm location in spec file is adjusted, and loci files are updated according to the change.
oxm tunnel_id is separated into oxm-1.3.
location of LOCI_SHOW_u64_tunnel_id macro is adjusted.
useless blank lines are removed.
Merge branch 'of_tunnel_id' into icmpv4_tostring
c_match.py is patched to name collision commented by @rlane
Merge into master from pull request #271:
Add TLVs for CRC config. (https://github.com/floodlight/loxigen/pull/271)
openflowj: fix u16obj read/write

Fixes the bsn_tcp_flags OXM.
Merge into master from pull request #273:
openflowj: fix u16obj read/write (https://github.com/floodlight/loxigen/pull/273)
loci: generate match tables from the IR

This removes most of the manual work from adding a new OXM. As a side effect,
it fixes locitest so it doesn't try to test OpenFlow 1.3 OXMs with an OF 1.2
message.
loci: address review comments
Merge into master from pull request #274:
loci: generate match tables from the IR (https://github.com/floodlight/loxigen/pull/274)
Add more port counters.
Merge into master from pull request #275:
Add more port counters. (https://github.com/floodlight/loxigen/pull/275)
java_gen: add PrimitiveSinkUtils
Merge into master from pull request #276:
java_gen: add PrimitiveSinkUtils (https://github.com/floodlight/loxigen/pull/276)
match.py merged by applying #274