To build on older linux distributions, like Debian Wheezy,
the target_include_directories should be replaced with
include_directories.

Fixes debian/#831361

* doc: moved to http://github.com/tarantool/doc

Added override keyword for proper methods of index and engine derivative classes

* Exclude web-sites and compiled JS files
* Exclude debian/ rpm/ FreeBSD/ directories
* Exclude CI files
* Exclude CVS files
* Exclude *.pyc

* Fix hardening if backtraces are off
* Ensure that all tests are passed with hardened flags
* RPM: add --with/--without backtrace option (default is --with)
* RPM: remove dependency on libbfd, libiberty, libz if --without backtrace
* RPM: enable stripping and debuginfo if --without backtrace

Backtraces are still enabled by default.

Hardened flags used by RedHat:

  -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2
  -fstack-protector-strong --param=ssp-buffer-size=4
  -pie -fPIC

* Detect multilib directories properly
* Remove duplicates from package.path/package.cpath
* Increase priority of tarantool/ prefixes
* Add Debian and Gentoo specific folders

Use values generated by cmake. Needed for homebrew.

* Don't print information if nothing has changed
* Remove -DENABLE_BUNDLED_XXX options which doesn't work
* Use common names for _DIRS and _LIBRARIES variables

Other changes:

 * Move CJSON sources to libserver to resolve dependency on lua/utils.c

Switch tarantool builds to a new RPM spec

* Add -DENABLE_DIST=ON option to enable init scripts on `make install`
* Create directories for tarantoolctl on `make install`
* Add logrotate script to `make install`
* Fix example.lua to work out of the box
* Use /etc/default instead of /etc/sysconfig on Debian
* Fix directories permissions for tarantoolctl
* Add support for systemd-tmpfiles (required by Fedora)

pod2man causes too many troubles

* Split libyaml (C library) and lua-yaml (Lua bindings)
* Add support for system libyaml-dev in CMake scripts if
   -DENABLE_BUNDLED_LIBYAML is OFF (default is ON)
* Add libyaml-dev to DEB dependencies

third_party/libyaml/ is completely identical to upstream libyaml 0.1.6.
(libyaml-0-2 in Debian/Ubuntu). Test are passed both with bundled and
system versions of the library.

third_party/lua-yaml/ is patched by me to use luaL_serializer, therefore
upstream version is not suitable for Tarantool.

This patch is needed to pass Debian package checks (lintian).