Value Types: remove unnecessary prefixes from enumeration constants

Some of our Value types had constants with superflous prefixes
e.g., IpProtocol.IP_PROTO_TCP instead of IpProtocol.TCP

This commit removes those
Merge branch 'master' of github.com:floodlight/loxigen
fix loci OXM ordering to match the spec

The C backend will now output OXMs in the same order as the Java backend.
openflow_input: fix naming of group type in group desc stats entry

The C backend blacklists the name "type" so accessors aren't generated.
"group_type" works and is consistent with the other classes.
Merge into master from pull request #86:
Remove unnecessary prefixes from Value Type constants (https://github.com/floodlight/loxigen/pull/86)
Follow Java guidelines for field modifier ordering
Merge into master from pull request #88:
fix loci OXM ordering to match the spec (https://github.com/floodlight/loxigen/pull/88)
add bsn_flow_idle extension

Similar to standard OpenFlow idle timeouts with a flow-removed notification,
but does not remove the flow.
Merge into master from pull request #89:
openflow_input: fix naming of group type in group desc stats entry (https://github.com/floodlight/loxigen/pull/89)
Merge into master from pull request #90:
add bsn_flow_idle extension (https://github.com/floodlight/loxigen/pull/90)
java_gen/DataPathId: make comparable
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)
Merge into master from pull request #91:
java_gen/DataPathId: make comparable (https://github.com/floodlight/loxigen/pull/91)
java_gen: fix java_gen on NFS

java_gen was removing the old working directory, with the loxigen
infrastructure still having a file handle open. This doesn't work
on NFS.
Merge branch 'master' of github.com:floodlight/loxigen
Merge into master from pull request #93:
java_gen: fix java_gen on NFS (https://github.com/floodlight/loxigen/pull/93)
Fixed typo: IP->Mac
Merge branch 'master' of github.com:floodlight/loxigen
Added methods to DatapathId to get/set by byte array
Make enabled field of packet in suppression request a boolean