Update silverbox protocol description to use BNF.
Add more comments.
Explain semantics of protocol fields and restrictions
on field content.

When called from a non-default location (non-working directory),
print usage, tell where to invoke the program from, and bail
out.

Add a new test suite, cmd. Add a new driver for this
suite, cmdline.py. This driver reads arguments from the test,
and executes the server with these arguments. Server output
is passed on as test result.

@todo: It's not necessary to start/stop the server
for 'cmd' suite. Will be fixed when how to start/stop
server is defined in suite.ini (we'll then be
able to define a no-op start/stop routines).
@todo tarantool_silverbox output is hard to auto-verify
since it contains the current time and process id.
Either implement a way to mask out pieces of output
from the result file (preferrable), or change
tarantool to not output volatile data.

test-run.py modified: we now can preprocess suite.ini
"client" parameters, and substitute $constants in them,
e.g. $server.

@todo: provide ability to substitute $constants in .test
files as well.

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

* u64-indexes:
  [box] Add kostja's comments and simplify field_compare.
  [box] Correctly compare multicolumn indeces with NUM64 keys.
  [box] Remove experemental code.
  [box] Add support of u64 hash index.
  [box] Rename khash structures in more consistent way.
  [box] Add suport of u64 hash indeces.

Delete a temporary file used for build.

Fix 'make test' failure after pull from master.

Test runner: provide better comments, add a summary
of failing tests when running with --force.
Change indentation.

* public/memcached-expire-stat:
  [box] Enable accidently disabled expire in memcached mode.
  [box] Repair memcached statistic. 	* Enable statistic collection. 	* Add counter of expire rate.
  [core] Better param name in stat_register()
  [core] Fix bug causing last stat value being ignored.

* public/core-cfg_get:
  [core] cfg_get: return 1 if param is missing in config file
  [core] add --cfg_get option

Merge remote branches 'public/fiber-raise', 'public/core-pull_from_remote_exit' and 'public/core-remote_state_to_header'

* public/fiber-raise:
  [core] Add ability to raise an exception in the other fiber.

* public/core-pull_from_remote_exit:
  [core] exit from 'remote hot standby' fiber in case of EXIT_FIBER exception

* public/core-remote_state_to_header:
  [core] move remote_state to log_io header

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.

	* Enable statistic collection.
	* Add counter of expire rate.

Going forward, 'test' will contain tests. Do not delete
it in make clean.

Make links to launchpad proper urls.
Fix spelling.

Update TODO file in the source directory:
 - migrate incomplete items to launchpad
 - remove completed tasks
 - add a reference to launchpad.

[box] [client] [perl] Fix _validate_params() not to clobber a param. Fix update/splice for compatiblity with older perls.