add support for parsing RIPv2 MD5 authentication packets
fix the return values in rip dissector
add support for parsing OSPFv2 MD5 authentication packets
remove an unused function from the rip dissector
fix old code to handle "Simple Password Authentication" correctly
replace multiple OSPF headers with a single unified version
remove "hex_encode" stuff (as suggested by @koeppea)
Merge pull request #372 from kholia/OSPF-fixes

add support for parsing OSPFv2 MD5 authentication packets
remove "hex_encode" stuff (as suggested by @koeppea)
Merge pull request #370 from kholia/RIPv2-MD5

add support for parsing RIPv2 MD5 authentication packets