Test envirment:
 - stop server routine was updated;
 - valgring start options was updated.
Valgrind:
 - suppressions was updated.

* process handle routines in test enviroment was updated.

Conflicts:
	core/tarantool.m
	test/box/valgrind.sup
	test/lib/server.py

* atexit memory freeing scheme
* reachable allocations cleanup

* core signal handling sigaction -> libev
* suppresion file updated

* test-suite valgrind support

Touch the generated files at configure
to avoid unnecessary rebuild.

Fix out-of-source builds and tests (test/box/protocol.test
was the main offender).

In DELETE, support flag BOX_RETURN_TUPLE.

A community request from Alexandre Kalendarev.

In the new DELETE (21) command, one can specify
delete flags. If BOX_RETURN_TUPLE is set, return
the old (deleted) tuple to the client.

Update doc/box-protocol.txt to reflect the new
(21) DELETE and its extended response format.

- token_is_identifier function was changed;
- TarantoolStreamReader was updated;
- admin connection in tarantool console client wax fixed.

tarantool preprocessor routine was changed:
 - Now 'exec obj ...' command will translate to obj.execute(...);
 - New command 'send' and 'recv' was added. 'send obj ...' and 'recv obj
   ...' will translate to 'obj.send(...)' and 'obj.recv(...)'
   respectively;
 - New command modifiers 'silent' and 'verbose' was added. Verbose
   (silent = False) value is default.

Tests - box, box_big, box_memcached, box_replication was updated.

Update the user guide with new links to configuration file,
and changes to replication configuration parameters, now that
feeder-in-core has been pushed.

Add lua generated files to .gitignore

Fix bugs in spawner child handling, performed at shutdown:
- shutdown children more portably
- remove races with lost SIGCHLD
- do not self-terminate when doing kill(0, signal)
(sending signal to entire process group).

Clean up custom_proc_title handling and fiber names.

Write mehtod in the TarantoolConnection class was updated.

Allow fiber_io_* on an fd which is ! fiber->fd,
and remove inbox2sock/sock2inbox in replication.

Fix a merge error (remove debug print).

Write method in the MemcachedConnection class was overlapped for correct
work with memcached protocols. Memcached tests was cleanupped.

Remove one memory leak in recovery_follow_remote.

Rename hot_standby back to local_hot_standby. Let's
not break compatibility without a strong need.

Merge replication_source_ipaddr and replication_source_port
to a single variable, replication_source, to be able to
provide a list of sources in future.

Update comments in the configuration file.
Remove custom proc title for replication, use custom_proc_title of
the main process.
Renames.

the tarantool logger process was changed from tee to cat.

Conflicts:
	cfg/tarantool_box_cfg.c
	cfg/tarantool_box_cfg.cfg
	cfg/tarantool_box_cfg.h
	cfg/tarantool_feeder_cfg.c
	cfg/tarantool_feeder_cfg.h
	core/exception.m
	core/fiber.m
	core/log_io.m
	core/log_io_remote.m
	include/fiber.h
	mod/box/box.h
	mod/box/box.m
	mod/box/box_cfg.cfg_tmpl
	mod/box/memcached.m
	mod/box/memcached.rl
	mod/feeder/feeder.m
	test/box_replication/common.result
	test/box_replication/suite.ini
	test/lib/admin_connection.py
	test/lib/box_connection.py
	test/lib/server.py
	test/lib/sql_ast.py
	test/lib/tarantool_box_server.py
	test/lib/tarantool_connection.py
	test/lib/tarantool_feeder_server.py
	test/lib/tarantool_server.py

Make sure we do not try to modify data in
read-only mode via memcached port.

Update test results, and the Python client.