test-run udpated

1. Enable background=false for test-run
2. Check local directory for config

io replaced with fio

tarantoolctl: Don't assume sophia_dir is a subdir of vardir,
create everything on the top level.

tarantoolctl: marginally fix reload, but see gh-824

fio: fix numerous bugs with failure of lua_tostring(), add tests.

~/.config/tarantool superseeds /etc/default, not augments it

0) DIST.LUA: Move dist.lua to tarantoolctl (+ DEB + RPM + DOCS)
0) DIST.LUA: Delete -w option
1) CMAKE: Add pod2man function for generating MAN Files from POD format
2) RPM: Add man files for tarantoolctl, move tarantoolctl+initscripts
from `tarantool` into `tarantool-common`
3) DEB: Remove tarantoolctl.1 creation
4) Remove trailing whitespaces

Fixes gh-570
Fixes gh-557

Recognize -w --wrapper, and don't daemonize if run from a wrapper.

 + Add tarantoolctl enter instance_name command

+ Fix logrotate.d config. #473

Don't try to execute a Lua script.

- change /etc/default format to Lua
- change defaults format to tarantool.cfg
- don't force logger/snap_dir/wal_dir/work_dir if it's set
- minor fixes in logging
- implement fio.dirname

* tarantool_ctl -> tarantool_ctl
* Add test-run on travis-ci (closes gh-221)
* Proper fiber name in the log

* In RPM/DEB we introduce new utility - tarantool_ctl (extra/dist/dist.lua)
* /var/pid -> /var/run
* Fix extra/dist/dist.lua
* /extra/dist/tarantool.init and /extra/dist/tarantool.service now
  are regenerated by cmake (paths to `dist.lua`)
* Systemd service (Uses sysv-init script)
* RPM Supports both systemd and init (by using '--with systemd' in
  rpmbuild flags)

TODO: Fedora 19,20,rawhide, CentOS 7 Uses systemd.