Merge branch 'gcc-unused' into refs/top-bases/gcc-branch

diff --cc cmd/zpool/zpool_main.c
Simple merge

diff --cc module/zfs/dbuf.c
Simple merge

diff --cc module/zfs/dmu.c
Simple merge

diff --cc module/zfs/dmu_objset.c
Simple merge

diff --cc module/zfs/dsl_dataset.c
Simple merge

diff --cc module/zfs/sa.c
Simple merge

diff --cc module/zfs/vdev.c
Simple merge

diff --cc module/zfs/zap_micro.c
Simple merge

diff --cc module/zfs/zil.c
Simple merge

diff --cc module/zfs/zio.c
Simple merge