The option is '-DENABLE_BUNDLED_ZSTD' and defaults to ON.

There are two goals of making this conditional, both related to building
Tarantool on Gentoo Linux from an ebuild:

* Avoid bundled ZStd building issue w/o pay to investivage it.
* Allow user to choose between system and bundled library.

Fix misleading "C atomics not supported" when git submodules
are missing.

Closes #2088

getopt_long() is available on all supported platforms.
Get rid of legacy gopt and use getopt_long().

Incompatible changes:

 * `tarantool --version --no-such-option` printed
    "unrecognized option '--no-such-option'", now it displays version.
    `tarantool --no-such-option --version` still prints an error message.

Needed for #1265

Add an option to enable LuaJIT's GC64 mode and enable this option
by default on OS X.

Closes #2643

Remove libbfd from dependencies and use libunwind for stack traces.

Closes #2103

Inpspired by tarantool/curl module by Vasiliy Soshnikov.
Reviewed and refactored by Roman Tsisyk.

Closes #2083

Set working directory to root of source tree while doing
`git modules update`.

Sophia was an experimental storage engine in 1.6.x.
Please use 'vinyl' engine in Tarantool 1.7 instead.

Closes #2040

We don't need these functions anymore.

* Check for missing cpuid.h header
* Fix sed magic in extra/mkexports
* Fix open_memstream implementation
* Fix CLOCK_PROCESS_CPUTIME_ID / CLOCK_THREAD_CPUTIME_ID
* Disable stupid -Wchar-subscripts warnings
* Add a workaround for "undefined __gcc_personality_v0"

Tested on NetBSD 7 and on x86_64-rumprun-netbsd.
Now you can use Tarantool on toasters.

See #1874

This patch is not perfect, but it is better than nothing.

+ Remove third_party/valgrind and third_party/pmatomic which
  also exist in src/lib/small/third_party.

* Write xlog via fd instead of fiob with FILE * interface

* Remove O_DIRECT mode, use fdatasync(2)/sync_file_range(2) with
  posix_fadvise(2) to free the page cache. Disk cache polution
  on snapshot was tested with `vmtouch` utility and fadvise()
  provides similar result to O_DIRECT.

* Remove fiob.c implementation (unused)

Make sure llvm-symbolizer is available. If not, reports will contain raw
addresses instead of line info.

Since leak suppressions aren't ready yet, we suggest setting
ASAN_OPTIONS=detect_leaks=0 environment variable when running tests.

Regression by d36ba279

Needed for #1689

Fixes #810

Fixes #1617

Fixes debian/#831361

Fixes #1617

* doc: moved to http://github.com/tarantool/doc

Use config.h instead.

* Use our own fork
* Fix typo in CMakeLists.txt
* Update build dependecies in README.md
* Fix a potential bug with buffer size calculation in ss_lz4filter_next()

I never remember using it, must be some ancient artifact.

Create /usr/lib*/tarantool and /usr/share/tarantool from tarantool package

* Exclude web-sites and compiled JS files
* Exclude debian/ rpm/ FreeBSD/ directories
* Exclude CI files
* Exclude CVS files
* Exclude *.pyc

I tired to type git clean blabla each time.