Core:
  - salloc_destroy was removed from tarantool_free routine
Test environment:
  - new option 'valgrind_disabled' was added to suite.ini;
  - box/show test was renamed to box/admin test;
  - box/admin test was splited to admin adn admin_coredump tests.

Test enviroment:
  - old valgrind.sup file was deleted (not needed any more).
  - unused options in suite.ini files was removed.

Rename 'silverbox' to 'box', across the board.
Delete the remnants of the old build system
(scripts/rules.mk and scripts/config-def.mk).

Do not touch client/perl for now, since it's maintained
elsewhere.

Split results from .test files into
.result files. Make each individual test a
small python program, which is executed from the context
of the main interpreter. This allows for easy access to
interpreter environment, such as the currently running
server.

Implement a pre-processor for .test files that replaces

exec admin <expr>
and
exec sql <expr>

with python syntax that actually sends string <expr>
to tarantool server connection (lib.admin.Connection), and
prints output to stdout (i.e. .reject file).

Implement stdout filters, for use in .test files:
this enables testing of statement that produce
run-dependent or host-dependent results.

Remove 'cmd' suite as unnecessary, args.test is moved
to box.suite. @todo: make results of the test host-independent.

Fix a bug in lib.admin.Connection (administrative connection)
when it would block and indefinitely wait for response for
some administrative commands.

Add test/lib/ for python modules.
Create the first module that implements
admin connection.
Automatically read host and port
and pidfile from tarantool configuration
file, and thus remove them from suite.ini.
Change .gitignore and remove a too
broad ignore mask (it ignored __init__.py,
which is mandatory file name for a module
in python).
Fix a bug in config reader for tarantool
that would leave "box.pid" in quotes.
Move TestSuite and Test to a lib/ module.
Patch cmdline.py and ./admin.py to
read input in line-buffered fashion (used
to be block-buffered), regardless of whether
input is a terminal or a pipe. This allows to
work with these tools interactively.

Provide options to admin.py to use it not just as
a test console, but aslo as an interactive client.

Implement
https://blueprints.launchpad.net/tarantool/+spec/tarantool-test-runner.

This commit adds an implementation of test running framework
(test-run.py), and a simplistic interactive client for
the administartive console of tarantool (admin.py).

A prototype of the first test suite is added in
directory test/box.

"run" is a convenience symlink to test-run.py.

This commit also adds "make test" goal to the
top-level makefile.