Split evio service start to separate functions bind and listen. Remove
rebind logic from evio_service and on_bind callback and implement in
iproto logic. Do listen after box recovery.

* Switch to PackPack for packages
* Use `packagecloud` deployment for packages instead of travis.sh script
* Use `script` deployment for sources instead of travis.sh script
* Package all branches, but upload only 1.6/1.7
* Move all Travis CI script into the single Makefile

extra/rpm are mot used anymore.

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

Closes #2040

Closes #2030

See #1874

Jenkinsfile is a script, akin to .travis.yml that contains
instructions how to build code in the repo. I'm experimenting
to see if we can implement a similar workflow to what we have
on travis.ci

Totally disable /usr/lib/rpm/brp-strip-* scripts on all
versions of rpmbuild.

Fixes #1901

* Don't start tarantool on install
* Don't restart tarantool on upgrade

Fix #2053

This patch doesn't change public C API.

See #1878

Fixes #1849

Fixes TALOS-2016-0255
Fixes CVE-2016-9037
Fixes #1992

Fixes TALOS-2016-0254
Fixes CVE-2016-9036
Fixes #1991

Fixes #1962

Needed for #1692

Rawhide and Sid are bleeding edge technlogies.

Remove hardcoded paths.

coredump() feature is broken, see #1886

Blobs and minified JS are prohibited by distributions.
Fixes packages on Debian Sid.

Closes #1852

Time calculation is too accurate.

Fixes #1946

Fixes #1896

Pass LDFLAGS flags properly to fix packaging on Debian Stretch/Sid.

Fixes #1935

See #1939

A hotfix for #1940

* Fix buggy math calculation and simplifies randomization logic
  introduced by gh-732. The primary difference is that the new
  implementation uses fixed periods (=box.cfg.snapshot_period)
  shifted by a random offset instead of floating periods
  (=box.cfg.snapshot_period + random). In addition, snapshot daemon
  now never start snapshoting earlier than box.cfg.snapshot_period time.

* Use fiber.channel() to control daemon

Fixes #1912
See also #732