add bsn_time extension

This extension allows the controller to get a timestamp from the switch. This
will differ from the controller's time due to network latency, TCP queueing,
and queuing in the switch software.
java_gen: add workaround for OF1.0 values to OFVlanVidMatch.java
Merge branch 'master' of github.com:floodlight/loxigen
loci: add time_ms show macro
Merge into master from pull request #124:
add bsn_time extension (https://github.com/floodlight/loxigen/pull/124)
openflow_input: fix of_group_desc_stats_entry.group_type

use enum ofp_group_type for consistency with the group_mod messages
Merge branch 'master' of github.com:floodlight/loxigen
Merge into master from pull request #128:
java_gen: add workaround for OF1.0 untagged value in OF1.3 VlanVid to OFVlanVidMatch.java (https://github.com/floodlight/loxigen/pull/128)
Merge branch 'master' of github.com:floodlight/loxigen
Merge into master from pull request #131:
Remove duplicate function getOpCode(). (https://github.com/floodlight/loxigen/pull/131)
loxi_ir: minor fix for compability with python <2.7.3

In python <2.7.3, vars() of a namedtuple returns a TypeError.
Using _asdict instead.
Merge branch 'master' of github.com:floodlight/loxigen
Merge into master from pull request #132:
openflow_input: fix of_group_desc_stats_entry.group_type (https://github.com/floodlight/loxigen/pull/132)
java_gen: make annoying enum warning a debug message
java_gen.OFMatchV3V13: auto-gen list of supported fields
java_gen.OFOxms: throw exception when user asks for unknown OXM
java_model: remove hand-generated oxm_map
Makefile: fix small bug

Symlink syntax caused java_gen/pre-written/src/src to be created
Merge pull request #133 from andi-bigswitch/master

java_gen.OFMatchV3V13: auto-gen list of supported fields
Makefile: make java targets more standard

separate the 'regular' make targets from the eclipse-workspace
target