Merge remote-tracking branch 'origin/1.9' into 1.10

src/box/vinyl.c

src/box/vy_point_lookup.c

src/box/vy_point_lookup.h

src/box/vy_read_iterator.c

src/box/vy_run.c

src/box/vy_run.h

src/box/vy_tx.c

src/box/vy_tx.h

test/box/errinj.result

test/box/errinj.test.lua

test/engine/iterator.result

test/engine/iterator.test.lua

test/vinyl/cache.result

test/vinyl/cache.test.lua

test/vinyl/errinj.result

test/vinyl/errinj.test.lua

test/vinyl/iterator.result

test/vinyl/partial_dump.result

test/vinyl/partial_dump.test.lua

test/vinyl/tx_gap_lock.result