Loxigen: added src/dst meta id matches

Encode a 1 byte src and 1 byte dst 'meta' ID into
ofp_match's pad2 byte.
Merge pull request #20 from capveg/master

    Loxigen: added src/dst meta id matches
Make port remove a request/reply pair.

Also added status indicator for create reply.

Updated c check build a bit to add flags
Removed $BIGCODE hack

old behavior: If $BIGCODE was defined, `make` would install into
	$BIGCODE/Modules

but... that was the wrong place and it was confusing.  Removed.
Merge pull request #22 from floodlight/bsn_det_vport

Make virtual port remove a request/reply pair.
Merge pull request #23 from capveg/master

Removed $BIGCODE hack in Makefile
add bsn_set_meta_id extension action

The of_type_maps.c code should be generated but is currently not.