Mechanically replace isc_boolean_t with int.
OK deraadt

no need to go through RETERR when we return a constant

In preparation of compiling lib/dns/rdata/ files individually we need
global visibility of str_totext.
Rename it to isc_str_tobuffer, put it into buffer.c and delete
duplicate implementations.

In preparation of compiling lib/dns/rdata/ files individually we need
global visibility of mem_tobuffer.
Rename it to isc_mem_tobuffer, put it into buffer.c and delete
duplicate implementations.

Always printing unknown types as TYPE%u and not sometimes as %u
considerably simplifies dns_rdatatype_attributes() since we then only
care about reserved types.
tweaks jsg

Delete a few more fromstruct_*, tostruct_* and freestruct_* functions
missed in previous. Also delete now unused utility functions.

We only need to create cname, ns, soa and tsig structs.
OK jsg

We only need to fill a wire format buffer from soa and tsig structs.
OK jsg

We only need to free cname, ns, soa and tsig structs.
OK jsg

We only need to check the owner for nsec3 records, remove all the
rest.
OK jung

We are always preserving the order of records.
This lets us remove compare_* and casecompare_* functions from
RR types.
OK jung

rmeove more unused functions and code

ok florian

We do not generate DNS records from text representations.
OK millert

remove some unreferenced functions

ok florian@

Move dig(1) and needed DNS libraries into it's own source directory in
usr.bin/dig.

From the beginning when we started to remove unneeded nameserver code,
it was our goal to extract dig functionalit

Move dig(1) and needed DNS libraries into it's own source directory in
usr.bin/dig.

From the beginning when we started to remove unneeded nameserver code,
it was our goal to extract dig functionality from the bind sources,
for everyone's benefit as this is easier to reason about.

In total we removed about 2/3 or over 300.000 lines of code.

We kept the lib/ subdirectory layout but moved the content of bin/ to
the top from the old bind source directory.

Previous sources and history can be found in the src/usr.sbin/bind
Attic.

With & OK deraadt
Proposed directory layout sounds good to sthen

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