Remove the restriction on type of primary key index.

Fix a compilation error.

Implement iterator over HASH index, and use it
in mod_snapshot() and build_indexes().

Change signature of index_tree_el_init, avoid
unnecessary use of palloc(), preallocate
buffers for reads and writes instead.

Reorganize loops in build_indexes() to avoid redundancy.

Rearrange code in build_indexes() to avoid
extra loops.

Split build_indexes() into two functions,
to avoid 4 levels of nesting.

No functional changes.

Eliminate server start/stop/deploy cycle for blueprint
'tree-primary-key' tests. Move the tests to box_big suite.

Add coverage.

Rename tree_index_member to index_tree_el. Realign code to fit 80
columns.

The patch doesn't change code in any way, only performs a rename.

Remove an unused box_hook_t declaration.

Use method name that don't make me bite my tongue
when reading the code.

Use subject-verb-object scheme prevalent in most languages.

When subject is a compound, use class-order-family-genus-specie
to identify it fully.

A fix for Bug#850031 "Assertion failure in iproto_interact()".

Fix fiber_bread() to read at_least bytes, not
buf->len - at_least bytes, as it used to work before.
Many places that call fiber_bread rely on this.

Print userdata for index in a non-suggestive, but
informative way.

https://blueprints.launchpad.net/tarantool/+spec/tree-primary-key:
Allow "TREE" index type for primary key: code review.

Conflicts:
	mod/box/box.m
	mod/box/index.m

Allow to invoke insert/update/delete/select/replace
directly on box.space objects.

Add box.space[i]:len(), which returns the
number of tuples in the space.

Add rudimentary index object support.

Add tests.

Implement INSERT command in Box. Minor cleanups in Lua.

https://blueprints.launchpad.net/tarantool/+spec/namespace-to-space

Rename 'namespace' to 'space' everywhere:
in configuration, in implementation, in documentation.

Add access to space configuration to Lua.
Make configuration in Lua read-only.

Provide access to server configuration in Lua.

https://bugs.launchpad.net/tarantool/+bug/730613

Document Bug#730613, "SELECT with a disjunction
on multiple keys returns matching tuples twice".

Now that confetti supports it, use boolean for true/false
yes/no config options.
Update the manual accordingly.

test environment:
  - luajit suppressions was added.

Install a filter to not include a local path into
a test results.

Fix the code which allocates Lua coroutines to properly
destroy them: the old code could destroy the same coroutine
twice, or never at all.

Remove auto-generation of tarantool_box_cfg.cfg.
This was intended as a sample configuration
file, but it is no longer syntactically correct,
and thus can not be used.
Besides, there are now semantical rules on top
of the syntax restrictions (e.g. you can't define
memcached_expire on a replica), which also
make the auto-generated config incorrect.

Remove it to not mislead first-time users into
trying it out.

Implement box.unpack() to be able to convert integers,
packed into a tuple, to Lua numbers

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.