Log Message:
Update net/nfdump to 1.6.12, patch provided from Bartosz Kuzma in PR 49332.

Changes since 1.6.6:

2014-02-16 v1.6.12
- Add NAT pool port allocation
- Modify/fix NAT vrf tags. Add egress vrf ID
- Modify common record due to exporter exhaustion. new common record
  type 10 adds 4 extra bytes. Reads v1 common record transparently
- Fix sflow potential crash

2013-11-13 v1.6.11
- Add ASA/NSEL 9.x protcol changes
- Make it llvm compilable

2013-08-12 v1.6.10p1
- Fix -t +/- n timeslot option
- Fix bug in nfanon - stat record update.
- Fix bug in netflow v5 mudule: extension map size wrong.
- Fix bug nfexport: In some cases could result in wrong flow counter.
- Fix nftrack - could coredump in some cases.

2013-05-16 v1.6.10
- Fix SPARC compile/optimise bug
- Add output packet/bytes counter to global stat - importatnt for NSEL flows ASA
 > 8.5
- Add NSEL filter options xnet
- Modify extension descriptor code for nfdump1.7. Still use 1.6 extension map \ 
layout for compatibility
- Add prototype for nfpcapd - pcap -> nfdump collector. Converts traffoc \ 
directly to nfdump files.
- Fix bug in ipfix module: uninitialised variable
- Cleanup syslog/LogError calls
- Fix minor non critical bugs and compile issues

2013-03-02 v1.6.9
- Fix some bugs in beta 1.6.9 NSEL code
- Fix bug statistics update with aggreagted flow records
- Fix sflow bug sfcapd stores wrong (ghost) dump by past samples in same sflow \ 
datagram

2013-03-02 v1.6.9
- Fix some bugs in beta 1.6.9 NSEL code
- Fix bug statistics update with aggreagted flow records
- Fix sflow bug sfcapd stores wrong (ghost) dump by past samples in same sflow \ 
datagram

2012-12-31
- Add time received in csv output
- ICMP should handled better now - somewhat
- Implement ASA NSEL records
- Add definitions in nffile and nx for ASA NSEL extensions

2012-11-09 v1.6.8p1
- Add dynamic source directory tree for multiple exporters
- Fix exporter bug: 'too many exporters' with large time windows
- Fix uninitialised exporter sysid in default sampler record - v9
- Fix v9/ipfix cache initialisation with no templates > 1 in same packet

2012-10-26 v1.6.8
- Add ip list option for 'next ip' in filter syntax
- Accept v9 sampler_id in 2bytes
- Fix IPFIX mac address bug - did not get collected
- Add IPFIX packet/octet TotalCount fields 85/86
- Add received timestamp to sflow collector
- Fix long flow duration calculation - 32bit overflow
- Fix v9 sampling ID: allow 2 byte ID
- Add IPFIX options as rfc5101 section-6.2
- Add exporter records for sflow collector
- Fix bug for MAC address printing %idmc and %odmc.
- Add received time stamp extension
- Add recursive format parser. Allows to extend predefined formats.
- Change flow record sorting to heapsort. remove limit 1000
- Merge -m option to -O tstart. -m now depricated.
- Add -O tend. Print order according to tend of flows ascending
- Apply -O print order for printing flow cache. Applies to -A

2012-07-31 v1.6.7-tc-1
- Special version for TC
- Print exporter and sampling records with nfdump -E
- Added exporter and sampling records to file.

2012-07-30 v1.6.7
- Prepare for file catalog in current file format.
- Fix bug in ReadBlock when reading flow from stdin pipe
- Add new more flexible translation engine for v9
- Add nprobe client/server delay fields
- Prepare for NSEL merging
- Fix memory corruption with double -A flags
- Fix bug in nfreader with compat15 mode files