temp-spaces: review fixes

include/ipc.h

include/tarantool.h

src/CMakeLists.txt

src/box/CMakeLists.txt

src/box/box.lua

src/box/box_lua_space.h

src/box/box_lua_space.m

src/lua/init.m

src/lua/lua_ipc.m

test/box/lua.result