Remove get_socket_addr(), use existing sockaddr_in
to save in the cookie.

Tuples are got a big bigger with shared-arena patch (4 bytes
per tuple overhead).

So we exhaust the current arena in out-of-memory test a bit
faster than before.

Add comments, update the manual.

On snapshot, increase snapshot version id (u32),
save current snapshot version within a tuple.

On tuple free, check if tuple version is equal to current
snapshot id, if so do direct free, otherwise append tuple
to the delayed free list.

Fix https://github.com/tarantool/tarantool/issues/44

A copy-paste implementation of print(64 bit number)
used to add an extra newline at the end of printed string.

Allocate slab arena in shared memory to reduce pages splits during
snapshotting.
Adaptation of patch made by Yuri Nevinitsin @nevinitsin.

Fix a crash when box.fiber.find() is called with no arguments.
Add a check for empty Lua stack.
Add a test.

2. delete setopt and delimiter contractions