Merge pull request #4 from MSOpenTech/v2

updated angle to fix memory leak when closing angle
update opensll to v1.0.1h
Merge pull request #6 from minggo/v2

update opensll to v1.0.1h
[ci skip]
update iOS openssl version to 1.0.1h
Merge pull request #10 from boyu0/libcurl_ios_build_with_openssl_1.0.1h_v2

update iOS openssl version to 1.0.1h