merge differences between nsd-4.6.0 and nsd-4.8.0

merge conflicts between 4.3.5 and 4.6.0, and update build

merge conflicts between our changes for nsd between 4.2.4 and 4.3.5

merge conflicts

- resolve conflicts
- Fix autoconf issues
1. Check for login_cap.h
2. Link with -Wl,-R
3. On NetBSD define -D_OPENBSD_SOURCE

merge conflicts

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

merge conflicts between 4.3.5 and 4.6.0, and update build

merge conflicts between our changes for nsd between 4.2.4 and 4.3.5

merge conflicts

- resolve conflicts
- Fix autoconf issues
1. Check for login_cap.h
2. Link with -Wl,-R
3. On NetBSD define -D_OPENBSD_SOURCE

merge conflicts

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

merge conflicts between our changes for nsd between 4.2.4 and 4.3.5

merge conflicts

- resolve conflicts
- Fix autoconf issues
1. Check for login_cap.h
2. Link with -Wl,-R
3. On NetBSD define -D_OPENBSD_SOURCE

merge conflicts

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

merge conflicts

- resolve conflicts
- Fix autoconf issues
1. Check for login_cap.h
2. Link with -Wl,-R
3. On NetBSD define -D_OPENBSD_SOURCE

merge conflicts

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

- resolve conflicts
- Fix autoconf issues
1. Check for login_cap.h
2. Link with -Wl,-R
3. On NetBSD define -D_OPENBSD_SOURCE

merge conflicts

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

merge conflicts

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

add back the yacc and lex generated files

merge conflicts

branches: 1.1.1;
Initial revision

NSD 4.1.19
Dec 11, 2017
Bugfixes
ignore fallthrough compiler warning in flex EOF rule.
Fix warnings emitted by clang for --enable-packed. Alignment is not a problem for x86_64, don't enable packed when the platform requires aligned access.
Fix spelling error in xfr-inspect.
Fix 3392: Fix regression in 4.1.18 for notify lists with ip4 and ip6 targets.
Add test for support of -Wno-address-of-packed-member for --enable-packed.

NSD 4.1.18
Nov 30, 2017
Features
xfr-inspect, it is not installed, it prints xfr files from /tmp made with 'make xfr-inspect' in the source dir.
retry timeout between sending notifies dropped from 15 to 3 sec.
NSD sends 16 notifies simultaneously.
configure --enable-packed reduces memory usage, at expense of unaligned reads. Saves about 17%.
Save memory by selectively allocate precompiled nsec3 hashes, saves about 16% memory.
make ip-transparent option work on OpenBSD.
Save about 2% memory by changing usage count size in name tree.
Fix #2871: Increase number of sockets for xfrd transfers.
Bugfixes
Fix gcc 7.1.1 warnings.
Fix writev compile warning on FreeBSD.
Fix #1446: A corrupted zone file "propagates" to good ones.
nsd-control zonestatus prints wait time between attempts, for zones that are in that waiting time.
Fix collision printout of nsec3 to print name, hash and reverse.
Fix #1567: Change crit to err log level for gettimeofday failure. Add defines for compile without syslog.
Fix crash for DS query when parent and child zones both configured in nsd.conf and parent zone has not loaded properly.

NSD 4.1.17
Jul 21, 2017
Features
zone parser parses type AVC (it has TXT format).
Fix #1272: use writev to put tcp length field with data for outgoing zone transfer requests.
Bugfixes
Fix potential null pointer in nsec3 adjustment tree.
Fix text format of deletes for CDS and CDNSKEY, single 0 to represent empty base64 or hex string.

NSD 4.1.16
Apr 25, 2017
Features
zone parser can parse acronyms for algorithms ED25519 and ED448.
Fix 1243: Option to make NSD emit really minimal responses, minimal-responses: yes in nsd.conf.
Bugfixes
Calculate new udb index after growing the array, fix from Chaofeng Liu.
Fix missing _t to _type conversion for disable-radix-tree option.
Printout serial error with hint it may be too big.
Fix 1228: OpenSSL include is not guarded with HAVE_SSL
Patch for expire state in multi-master when masters includes broken master, from Manabu Sonoda.
minor manpage fix.

NSD 4.1.15
Feb 16, 2017
Bugfixes
Fix nsd-control and ipv6 only.
Squelch zone transfer error address family not supported by protocol at low verbosity levels.
Fix #1195: Fix so that NSD fails on non-compliant values for Serial.
Fix to rename _t typedefs because POSIX reserves them.
Fix that nsec3 hash collisions only reported on verbosity level 3.

branches: 1.1.1.1.4;
Import nsd