support ios 8.0
Merge branch 'master' into refs/top-bases/t/3rdTools/libev
Merge commit 'refs/top-bases/t/3rdTools/libev' into t/3rdTools/libev
Merge branch 'master' into refs/top-bases/t/3rdTools/libebb
Merge branch 't/3rdTools/libev' into refs/top-bases/t/3rdTools/libebb
Merge commit 'refs/top-bases/t/3rdTools/libebb' into t/3rdTools/libebb