Add support for Generic Network Virtualization Encapsulation (Geneve).

Defined in http://tools.ietf.org/html/draft-gross-geneve-02
Regenerate configure script.
Undefine HAVE_PCAP_FINDALLDEVS, if appropriate, before it's used.
Radius: update Packet Type Codes and Attribute Types with RFC/IANA names
Merge remote-tracking branch 'bpf/master'
Fix indentation
Add the Radius update
Merge pull request #411 from jessegross/geneve

Add support for Generic Network Virtualization Encapsulation (Geneve).