- write the docs
- remove unnecessary introduction of Perl
- properly implement, document and test box.fiber.wrap()
- rename box.find, explore alternatives (none)
- rewrite box.unpack('R') to reuse code and do
what's expected of it.

* Rewrite box.net.box:
	- connection process is in internal fiber, so
	  connector can reconnect lost connections
* Add box.fiber.wrap function that runs new detached fiber
* Add some tests

Move memcached to src/
Make iproto.m dependend on box/*, not vice versa.
Remove box_ prefixes from test suite names.
Initialize networking outside of box/.

This makes Box a step closer to being just a storage
layer for Tarantool.

Still some ugly deps since box/ continues to manage
local hot standby and memcached expire (todo: move it out).

Move mod/box/ src/box. Fix broken packages.
Rename tarantool_cpack.cmake to cpack.cmake.

Make box.lua just one of the many files which can be
compiled into the server.

Fix lbox_tonumber64 to not truncate large Lua numbers (which
don't fit into 32 bit range).

Make box.fiber.id() work according to the docs.

Fix coding style, add comments, remove
an unused variable (int raise).

If libuuid is not found it won't be linked/used.

https://blueprints.launchpad.net/tarantool/+spec/box-uuid

Move out from box.m INSERT/UPDATE/SELECT/DELETE/CALL
implementation.

Convert box.lua to box.lua.c and compile it in.
Fix broken out-of-source build of luajit, by adding
a few more generated files to touch-nocreate rule.

An intermediate step, use size0 for 'size' temporarily,
to ensure there are no compilation errors.

This is a code review of Konstantin Shulgin's branch
refactoring-tbuf.

Fix a bug when Lua transaction was rolled back
twice when Lua procedure was invoked from CALL.

Change the way arguments to and from CALL
statement in the binary protocol are passed:
we used to pass everything from the wire as a single
binary blob. Now every field of the received
tuple is passed in as a separate string argument.

Everything passed back from Lua is converted to a tuple. This
makes CALL response similar to one of SELECT.

Improve box.pack() to convert its argument to integer when
necessary. Add an argument count check to box.pack().
Additionally, now box.pack() can be used to pack
operations of 'UPDATE'.

Use tarantool_lua_tostring() in iov_add_ret():
this function is now used to convert return values to
the binary protocol in box_lua.m. This is necessary
if we try to send boolean or nil over the
binary wire, since Lua C API lua_tostring()
does not convert them.

Add box.lua - a system Lua script
compiled into Tarantool and containing a bunch
of Lua code preloaded at startup.

Populate box.lua with implementation
of basic Lua functions:
box.select(), box.update(), box.replace(),
box.insert() (currently an alias for box.replace()),
box.delete(). They are all wrappers around box.process().

Move box_lua_init() to the beginning of mod_init(),
since Lua in future can be used in recover().

Fix a wrong assumption about the contents
of Lua stack in iov_add_multret().

Update sql.g Python SQL grammar to allow
an empty argumeent list for procedure in CALL
statement.

Add initial documentation on Lua procedures.

Add more Lua tests.

Unrelated: rename INSERT to REPLACE, and UPDATE_FIELDS to
UPDATE.
Remove SELECT_LIMIT, which is not used any more.

The box tuple implementation was moved to separate file. Tuple flags
NEW and SEARCH was removed (unused). box_mode enum was removed (unused).

Add tuple print-out in yaml format, to be able to
print Lua procedures output in the administrative console.

Add box.process() function, the main callback into
box from Lua. It takes a binary packet and passes it
on to box for execution. The results of execution
are added to fiber iov vector, so we can always
just grab them and print out, which we do in the
administrative console.

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).

We modify memcached code quite often,
and asking ragel to regenerate .m from .rl file
every time .rl file changed was tiresome both
for revision control and for code reviews.

Leave in memcached-grammar.rl only memcached_dispsatch(),
which is generated by ragel, and everything else
move to memcached.m. This should lessen cases
when we have to re-generate memcached-grammar.m.

This patch doesn't produce any code changes,
only moves the code (and cleans up include
files at start of memcached.m).