Merge branch '1.10' into 2.0

.travis.yml

extra/exports

src/box/applier.cc

src/box/relay.cc

src/box/vinyl.c

src/box/wal.cc

test/replication/catch.result

test/replication/catch.test.lua

test/replication/recover_missing_xlog.result

test/replication/recover_missing_xlog.test.lua

test/replication/suite.ini

test/vinyl/quota_timeout.result

test/vinyl/quota_timeout.test.lua

third_party/luarocks

third_party/tarantool_ev.h