As of now, the version of the library is consistent with the release.

* improve-signal-handling:
  knotd: handle control interrupts atomically
  review: bool signal variables
  fdset: require pselect(), remove unsafe compat implementation
  knotd: reset umask() when starting
  knotd: properly set signal blocking for new threads
  knotd: fix previously broken signal blocking
  knotd: setup signal at once place
  knotd: remove forced stop from signal handler

Merge request !308

Lubos Slovak authored 10 years ago and Jan Včelák committed 10 years ago

- Test response with a long CNAME loop.
- Some queries in basic/query test did not have the zone name
  appended, resulting in bogus answers (REFUSED). Not visible,
  because the responses are only compared to ones from Bind.

TODO: Comparison with Bind should be replaced by checks for
      particular requirements for the response.

Daniel Salzman authored 10 years ago and Jan Včelák committed 10 years ago

The previous value (4 sec) extended ixfr/from_differences execution
time by 40 minutes!

Active signal mask is inherited by new threads. Therefore, control
signals used by the main thread had to be blocked at the moment, when
new threds are created.

The former mask used to block signals was empty and had no effect.

The signals are blocked during server shutdown. Therefore the signal
handler could not be called twice.

Improve structure names

See merge request !307

Discarded the libknots (common-knot) library

Most of the files were moved to `knot/common/` (ex `knot/other/`).

Two things moved to `utils/common`, because were used only there (`hex`, `strtonum`).

One file (`strlcat`) moved to `libknot/internal/`, as it was used both in server and in libknot. (Also, `strlcpy` was there already).

See merge request !306

Most of the files were moved to knot/common/ (ex knot/other/).

Two files moved to utils, because were used only there
(hex, strtonum).

One file (strlcat) moved to libknot/internal/, as it was used both
in server and in libknot. (Also, strlcpy was there already).

Moved common/ to libknot/internal/

2nd step in separating libknot into an independent library. As we agreed, I moved all files from `common/` to `libknot/internal/`.

Also some renaming was done: symbols in `libknot/internal/` should not be prefixed with `knot_` unless they are system symbol replacements. Unified the prefixing of `namedb` symbols.

Fixes #305
Following: #301

See merge request !303