Important changes:
  * lua_libs are now copy from TarantoolServer (if you need, e.g.,
    to copy .lua or .xlog file when you starts server you may
    simply add it to server.lua_libs variable, and in the end
    simply delete it)
  * server now stops on random ports, for your convinience, when you
    `--start-and-exit` test-system - it shows on what port it starts
  * when you want to create a server, that is replica of some other
    server, you must do something like `replica.rpl_master = master`,
    then all will be ok. if hot_standby, then
    `hot_standby.hot_master = master`. when you stop working with it:
    `replica.rpl_master = None`..
  * new option: server.shebang is used for running scripts, no need
    to spoil server.binary now.
  * for config, init_lua and other options now there are decoreators.
    you may use relative paths now.

Other:
  * Some tests were rewritten for new TarantoolServer
  * Add `environment variables` for lua tests, possible to send it to
    server.
  * add rpl_master and hot_master for server directives in lua_tests
    (better idea, it seems, to move all `replication/` tests to python)

Some issues:
  * --valgrind:
    1. `chase_cuOff: no entry for 0x07422`... It garbages output.
    2. If you redeploy server then valgrind log is overwritten.
       Possible solutions:
         a) `valgrind_disable` this tests.
         b) Append logfile with temporary logfiles.
    3. Some memory leaks: need to be fixed.
  * --gdb: some minor code problems, all works, but tests, that
    crashes server won't work (new system of knowing that server
    is up)
  * Need of minor(!!) cleanup

Check that tuple is an msgpack array.

Introduce a structure to represent a thread with an event
loop in it.

Do not require a working event loop in say() or wal_opt_sync().

Allow start of tarnatool_box in #! form.

Remove script_dir.

Make all configuration options optional (primary_port
was the last one required).
Make the configuration file itself optional.

If no watcher is started for the event loop, either based on
the config file settings, or in the #! script, do not start the event loop.

Update the test runner to take the new changes into account.

Fix a bug in symbols_load() when no symbols
could be loaded when path to executable was neither
relative nor absolute (but based on PATH).

Fix a bug with ignored return value of slab_arena_create()
in tuple.cc

This patch add specialized versions of box.process for select, insert,
replace, update and delete requests. This optimization reduces the
number of Lua <-> C switches during request processing. New functions
create struct request directly without allocating temporary buffer for
entire request body.

Conflicts:
	src/box/box_lua.cc

This is a NULL-merge.

there are no --append parameter in OSX tee cmd, only -a

by https://github.com/tarantool/tarantool/wiki/Lua-API-1.6-%28ru%29#wiki-select

Conflicts:
	CMakeLists.txt
	doc/user/stored-procedures.xml
	doc/user/tutorial.xml
	extra/rpm.spec.in
	src/salloc.cc
	test/big/suite.ini
	test/box/admin.result
	test/box/configuration.result
	test/box/lua.result
	test/memcached/off.result

Rationale:
Any error which implies a system administrator action needs to be
marked explicitly in the log, so that it's easy to find and act
upon.

This change the number of log levels, so the default log level was
bumped from 4 to 5. Installations which set the log level
explicitly need to adjust their setting.

Switch the parser to use msgpack for request body.
Update the python driver and tests.

net.box.test is disabled.