Merge branch 'ocelot-master'
Fix #130: Convert box.pack() and box.unpack() to a new 'pickle' module

This patch adds a new Lua module called 'pickle'. This module incorporates
former box.pack() and box.unpack() functions. These functions removed from
core because they are not needed for box anymore. This patch also removes all
box-specific formats from these functions.
Merge branch 'master' of https://github.com/tarantool/tarantool
Merge branch 'ocelot-master'
Merge branch 'gh-130-box-pack'
fixed ERRINJ_INDEX_ALLOC for hash and tree induces. removed irritating pragma messages
Merge branch 'master' of https://github.com/tarantool/tarantool
fix GH-337