secondary_indexes_enabled.

Conflicts:
	src/box/tree_index.cc

calls.

Use beginBuild(), reserve(), endBuild() to implement Index::build().
This is a pre-requisite for the refactoring of the
recovery API to make recovery of data dictionary spaces more
straightforward.

@todo: manage instances in /etc/tarantool

Split key part allocation and initialization in key_def_create().
This makes it possible use of the same key_def_create() when
"building" a key def for memcached space, and when building
it from the configuration file.

Make key_def.[h,cc] unaware of struct tarantool_cfg.

Instead of populating Lua box.space[] table once at
server start, update it with space data whenever it changes.
This is a pre-requisite patch for the new data dictionary,
which allows adding/dropping spaces on a running server.

Generalize session triggers to be usable for on_commit/on_rollback
events.

Remove key_def->max_fieldno as well.
Rename space_n() to space_id(), space_by_n to space_by_id().

Follow up on refactoring of struct key_def ownerhship.

Another pre-requisite patch for the new data dictionary,
transfer ownership of struct key_def from struct space
to class Index.

Once Index instance is created, it takes posession of the
key_def object passed to initialize it.

key_defs array in struct space is gone.

A pre-requisite patch for data dictionary: sotre index
ordinal number in the key_def object.
Remove struct space from index constructor.

 * Parse request type inside of request_create
 * Remove palloc from request_create
 * Replace request_execute with a fun pointer in struct request
 * Refactor box_process API to accept struct request *
 * Create requests directly in iproto.cc and box_lua.cc
 * Update memcached, recovery and other parts to use new API

Thanks for Anatol Pomozov

fix link url and some typos

1) Lua Tarantool Server, that runs plain lua code and admin server commands (separated ';\n')
2) Python Tarantool Server, that runs old plain tests.
Also created Two types of tests, that inherit FuncTest (Cause they're FuncTest):
1) LuaTest -> Lua Tarantool Server
2) PythonTest -> Python Tarantool Server
In the future we plans to add luabench as one of Test types
Rename all cores to appropriate names of server (now it's 'lua tarantool' and 'python tarantool')
Prepare to remove lua prefixes (if you need to test wrong or nonimplemmented command you may run 'admin('cmd', simple=True)')
If you want to implement new server command - add needed regexp to admin_connection.py.
if it's fixed length command, then add it to rg1, else rg2

Incompatible change,
https://blueprints.launchpad.net/tarantool/+spec/cardinality-arity

cardinality is how many unique elements a set contains. wrong term
for the max number of fields in a tuple

Hat tip to Alexey Panfilov

Make w3c isopub.ent entity files available locally,
since it is part of nobody-knows which package on Ubuntu,
and may be missing completely on other distributions.

On Ubuntu 13 even though it is part of mathml, it's not listed
properly in /etc/xml/catalog apparently.

This fixes xsltproc warnings and speeds up manual generation
significantly.