nfdump-1.6.23

• Fix potential FreeNode without valid Node in nfpcapd.
• Add all non TCP/UDP IP protocols as streams in nfpcapd
• Add mpls unwrap in nfpcapd. Skip MPLS labels
• Add ESP to processed protocols in nfpcapd.
• Some Code cleanup
• Change spin lock to native C11 lock
• Cleanup code for issue #283
• Fix minor nfpcapd issues
• Add mpls unwrap in sflow code - adds mpls labels if available
• Update rbtree.
• Fix potential deadlock in nfpcapd if it terminates.
• Add packet capture buffer size to nfpcapd
• Fix sflow code extended field parsing. #262 and #273
• Fix endless loop of nfexpire, if it does not find files
• Fix processing deoding error for yaf exporter
• Zero out tcp flags for non TCP records
• Add reverse element enterprise ID 29305 for counter values
• Add biFlow direction element 239
• Add flow end reason element 136
• Make -Tall the default for nfcapd to collect extensions
• Code cleanup and boundary checks in option template processing
• Implement element 160 (SystemInitTime) in option template
• Add Element 160 (SystemInitTime) in flow record used by Huawei
• Fix path handling for -l
• Fix print plain numbers #263