Merge remote-tracking branch 'origin/master' into 1.6

.gitignore

Doxyfile

Doxyfile.API.in

README.md

cmake/module.cmake

doc/CMakeLists.txt

doc/sphinx/CMakeLists.txt

doc/sphinx/conf.py

doc/sphinx/reference/capi.rst

doc/sphinx/reference/index.rst

doc/www/content/newsite/index.yml

src/box/box.cc

src/box/box.h

src/box/engine.cc

src/box/engine.h

src/box/error.h

src/box/index.cc

src/box/index.h

src/box/iproto.cc

src/box/iproto_port.h