update bigcode

* submodules/bigcode 71d8762...0a84b73 (1):
  > Merge into master from pull request #37: slot allocator module (https://github.com/floodlight/bigcode/pull/37)
update indigo

* submodules/indigo 655d3cd...b6b40ca (4):
  > Merge into master from pull request #164: support IPv6 in OFConnectionManager (https://github.com/floodlight/indigo/pull/164)
  > Merge into master from pull request #163: Fix bugs in logging and socket write (https://github.com/floodlight/indigo/pull/163)
  > Merge into master from pull request #162: OFStateManager: handle error return from group deletion (https://github.com/floodlight/indigo/pull/162)
  > Merge into master from pull request #161: OFConnectionManager: improve log messages (https://github.com/floodlight/indigo/pull/161)
update loxigen-artifacts

* submodules/loxigen-artifacts 8619d52...2cc2fe7 (4):
  > Artifacts from https://github.com/floodlight/loxigen/compare/56b0429ae23c6c17dd4b123197236176224a9e42...e9f250b71837a319c258332b32a6512a526fa8c2
  > Artifacts from https://github.com/floodlight/loxigen/compare/eadf463c7ca04b598353f654d55fab46fee4fec1...56b0429ae23c6c17dd4b123197236176224a9e42
  > Artifacts from https://github.com/floodlight/loxigen/compare/9dcd9a36e195ad63e85a9e2646a971a00097bc3e...eadf463c7ca04b598353f654d55fab46fee4fec1
  > Artifacts from https://github.com/floodlight/loxigen/compare/e9d105578e13db5fa6c52f0b8c7b4d80f328b31a...9dcd9a36e195ad63e85a9e2646a971a00097bc3e
update switchlight-common

* submodules/switchlight-common 9ea17b4...2299b04 (3):
  > Merge into master from pull request #62: send OFPP_TABLE packets with in_port OFPP_CONTROLLER (https://github.com/floodlight/switchlight-common/pull/62)
  > Merge into master from pull request #61: dhcpra: move system VLAN check to dhcpra_handle_bootrequest (https://github.com/floodlight/switchlight-common/pull/61)
  > Merge into master from pull request #60: Don't drop DHCP packets on unsupported VLANs (BVS-2176) (https://github.com/floodlight/switchlight-common/pull/60)
Merge into master from pull request #199:
update submodules (https://github.com/floodlight/ivs/pull/199)